Visual Studio 2015 Intellisense not working - visual-studio

I have a fresh install of VS2015 on windows 8 and intellisense doesn't work at all (nothing!) in any environment.
I also have VS2013 (with Resharper 8)on the same machine which works fine.
Any ideas before I go through a re-install?

Probably the problem is with ReSharper, I'm running VS2013 and VS2015 on the same machine without any issues.
I would try:
In Visual Studio 2015, go to 'Tools | Options | Text Editor | C# | General both "Auto list members" and "Parameter information" should be checked.
If that doesn't work I would try to disable ReSharper in VS2013 and try to get the normal intellisense working. Same procedure as above if ReSharper fails to restore the settings.

Note: Only do this as a last resort, because it will reset virtually all of your user preferences, including where your toolbars are, environment fonts etc.
I reached here because my intellisense was giving 1000's of errors in the Error List after installing Visual Studio 2015 on a clean Windows 7 machine.
The answers here did not apply to me, but this answer on StackOverflow: Razor intellisense not working in VS 2015, worked for me.
Run this command from the VS "IDE" folder:
devenv.exe /resetuserdata
When I restarted Visual Studio it took several minutes to "prepare Visual Studio 2015 for the first time", and when I reloaded the project all the intellisense errors had gone.
For info, this is how I navigate to the command prompt:
Right-click the Visual Studio 2015 shortcut on the start menu to get the context menu:
Select 'Open file location' to open a new Explorer window:
Left-click anywhere on the white to deselect devenv.exe, then shift + right-click to bring up the extended context-menu, then select 'Open command window here':
Then paste the command: devenv.exe /resetuserdata
When Visual Studio starts, it's been reset:
And when I load project, errors are gone:

Make sure Tools -> Options -> Text Editor -> C# -> IntelliSense -> "Show completion list after a character is typed" is checked. I had installed and uninstalled VS 2017 and that's when IntelliSense stopped working in VS 2015 for me.

How I fixed it:
I went to Tools -> Extensions and Updates and uninstalled every extension I wasn't using. There were only about 3 of these. One I remember removing was "Microsoft Office Extensions", or something like that. I don't have either resharper or Xamarin, which I've seen mentioned in relation to this. When I'd finished Visual Studio restarted itself, and XAML intellisense was back! Relief...
It may be the case that all you need to do is uninstall any one extension, and the resetting that VS does after that fixes the problem.
Further detail:
I don't recall changing anything specifically (eg. installing anything), when this problem suddenly appeared. I suspect it was due to a Windows update. I was really worried about this one!
I tried restarting VS, and restarting my PC, several times without success, and also checked my intellisense settings. I tried the suggestion of unchecking them and checking again.
My F# code had also lost intellisense. C# was fine, except for XAML.
It was in all VS2015 projects.
Version: Visual Studio 2015, Windows 10. January 2018.

I might be kind of late for the party, but hopefully this helps out anyone.
Please note, the below is just one possible cause for the issue described in this topic.
Your issue might be that you have one project/library referencing the other, but the Target Frameworks are different.
Make sure the frameworks are compatible and see if intellisense picks up your using references, etc.

Related

VisualStudio not saving Startup Window

Since a few weeks I have had this infuriating problem.
Whenever I start VS it opens an empty environment.
I tried to change that in Options > Environment > Startup from "Empty environment" to "Start window". After pressing "OK" I restarted VS completely and reopened it. Again: a new empty environment opens.
After reinstalling VS several times now I gave up and want to know, if someone had a similar problem and knows a fix for this problem.
Visual Studio Enterprise 2019 (16.8.3)
Installed Workloads from VS-Installer:
ASP.NET and web development
Azure development
Python development
.NET desktop development
Desktop development with C++
Data storage and processing
.NET Core cross-platform development
Additional Extensions:
JetBrains ReSharper 2020.2.4
Visual Studio Tools for Tizen
*all the extensions are up-to-date
After MONTHS I finally found a solution. I basically tried to uninstall all extensions and discovered that this issue only occurs while ReSharper is installed. I didn't find anything regarding this on the internet, therefore I searched all of the options and I finally found the issue!
If you have the same issue and have ReSharper installed (currently 2020.3.3) open Visual Studio and go to Extensions/ReSharper/Options. A new window will pop up. Then navigate to Environment/Performance Guide and under the group Visual Studio preferences affecting performance you'll find the item Show empty environment at startup. Set it from Fix Silently to Ignore. Click Save and close this window.
Additionally, you have reset the specific Visual Studio option. Therefore open Tools/Options and navigate to Environment/Startup and set the On startup, open: to Start window. Click OK and restart Visual Studio to check if the Start Window now gets displayed correctly.

CodeLens not showing references

CodeLens stopped working for some reason in project solution that I'm dealing nowadays. It is not showing references instead "- references". However, when I open up Visual Studio with another project It works like charm.I can confirm that CodeLens is enabled. Do you have any idea to make it work?
My Solution:
Toggle the CodeLens feature off and then on again.
Note: Many have found the feature to be turned off after an update so you just need to turn it back on. Thanks to #razblack for calling this out. Don't forget to give his comment an upvote if this was your issue!
Go into Tools -> Options... -> Text Editor -> All Languages -> CodeLens.
Uncheck "Enable CodeLens" option and click OK.
Go back into Tools -> Options... -> Text Editor -> All Languages -> CodeLens.
Check the "Enable CodeLens" option and click OK.
Note: I've fixed the issue once before by closing the problem .cs file and then reopening it. Closing any referenced files may also be required.
My Problem(s):
Similar to the original poster, CodeLens stopped refreshing references after I made a bunch of refactors. I was seeing stale references to code that didn't exist and I was also seeing the "- references" issue as described in the original post.
My Environment & Specific Scenario:
Visual Studio 2015 with Service Pack 2 and Resharper Ultimate 10.0.1
I was doing a major overhaul with a ton of refactoring and my project wasn't compilable for an hour or so. Once I could compile the project again, the references weren't working.
Same problem here.
CodeLens works normally with small solutions, but not working with large ones.
And this behavior is accompanied with crash of Alm.Shared.Remoting.RemoteContainer.dll process.
Tried in VS 2013 Update 4 and VS 2013 Update 5 RC.
Solution:
Close all programs and clean %LocalAppData%\Temp folder (or maybe just ALM folder inside it).
A simple solution, which works!
I did try enabling CodeLens in Visual Studio (2015) -->
Quick Launch (Ctrl+Q)
Options (CodeLens)
But, it was enabled :( Then, it did work with: (Closing the programs),
Win+R --> %temp% EnterDelete all
For me, CodeLens was disabled, so make sure it is still enabled.
I know it is an easy answer, but it might help some developers.
Go to Tools -> Options -> Text Editor -> All Languages -> CodeLens then click the "Enable CodeLens" option if it is not checked and then save it.
It looks like VS disabled it for some reason, maybe after an update or slow startup.
Try to remove .suo file which is storing some enviroment/solution settings. This helped me.
Just had this problem with VS 2019.
I tried disabling / enabling codelens and it didn't work.
I deleted the .suo after that and it didn't work.
I tried disabling / enabling codelens again (after deleting the .suo) and now it works again.
UPDATE (about 2 weeks later):
It started happening again and this time I disabled IntelliCode in Extensions and all of a sudden Codelens started working again.
UPDATE AGAIN (25 Nov 2019):
I reported this to Microsoft and had a dialog with them. You do not have to turn off all of Intellicode at this time, only disable Intellicode Refactorings in Tools -> Options -> Intellicode. The actual fix is slated for VS 2019 16.4 I believe.
You may have circular references in your solution that prevents CodeLens from working. Some details were provided in the comments for this issue on the Visual Studio Connect site:
Somehow, two of my projects in my solution ended up referencing each
other causing a circular reference. I think it was a by-product of
Resharper's shortcut to reference an undefined class. Once I was
cleaned up all of the references, I'm now getting valid values in my
reference counts.
How did you go about "cleaning" up references?
In my case, my solution has multiple project files. In the references
folder of Project A, there was a reference to Project B. In the
references folder of Project B, there was a reference to Project A.
This was causing the circular reference. If you try to do this
"manually", VS will prompt you with a warning regarding the circular
reference.
To clean this up, I removed the reference to Project B from my Project
A. I had do some minor class definitions in my Project B so everything
would still compile in the end.
I found out that if you block the Visual Studio with the Firewall, the Code Lens did not work.
So unblock it from the firewall to make it work.
Or edit Firewall settings for file:
C:\Windows\Microsoft.NET\assembly\GAC_32\
Microsoft.Alm.Shared.Remoting.RemoteContainer\
v4.0_12.0.0.0__b03f5f7f11d50a3a\
Microsoft.Alm.Shared.Remoting.RemoteContainer.dll
I had this problem with VS2015 that already had "update 1" installed.
The thing was that I originally installed VS2015 with the "custom" setup, not the "default" option, and I accidentally left out the "Git for Windows (3rd party)" option under "Common Tools".
This can be fixed by these steps:
Run the VS2015 setup again (from control panel - uninstall program)
Right click VS2015, select "Change"
On popup screen, select "Modify"
On setup screen, select "Git for Windows (3rd party)"
Move on with the setup, install selected features
In Visual Studio Professional or Enterprise you can enable CodeLens by doing this:
Tools → Options → Text Editor → All Languages → CodeLens->Enable
This is not available in some Community Edition versions
Try deleting .suo file inside of the hidden .vs folder in your project. This worked for me in VS 2017.
My Problem
Always directly after enabling CodeLens, press OK, i see the extra space required for the CodeLens information and than it disappears and when i look at the options again it is diabled. Driving me nuts.
Approaches
Deleting caches/configurations. Clean start without Extensions work. Normal start without ReSharper works. Reinstall ReSharper + deleting cahces -> False behavior
Solution
Unter Extensions - ReSharper - Options - Environment - Performance Guide was "Disable CodeLens for all languages" set to "Fix Silently". Set to Ignore -> WORKS!
hope this helps someone
I had the same problem, but one's of my colleagues who has the same development environment than me, doesn't have it...
The only one difference between our both environment was the quantity of RAM. There is 10GB allocated to his VM, and on mine, there is 6GB allocated. Since I upgraded the quantity of RAM allocated to my VM to 8GB, all my references are shown !
Installing Update 1 for Visual Studio 2015 fixed the problem for me.
Download Update 1
After reading the answer to this Stack Overflow question CodeLens only showing references? I decided my problem with Codelens was I was running Visual Studio 2015 Update 1 but was using Team Foundation Server 2012. I upgraded to TFS 2015, which upgraded in place and didn't require any new settings or URIs to be connected to Visual Studio as before. Then I reloaded my solution - but I still had the issue where it just said "– references" everywhere. I closed Visual Studio, started it again and reloaded my solution and finally I saw the correct reference counts as they used to show.
I found on the new VS 2015 update 3 it happens on a large class in a medium level solution 10+ projects and has nothing to do with circular references, a bad SUO file, or other things. It appears just deleting the temp file location(as mentioned already), closing VS and then reopening and hitting 'ALT+2'(forcing a reference find for Code Lens) made it magically work for me.
It also appears in some solutions and projects Visual Studio will create an old referenced suo file in .vs folder. I don't know the exact rhyme or reason, but it could be created in my case and the CodeLens worked again. It could potentially be a Visual Studio options is somehow referenced in projects under source control. As I know this happened with an older solution I have upgraded many times that was under GitHub control and it does have an .gitignore file(ignore files could change depending on source control). Suffice to say I have had similar things happen with other techs in the past when there is a lock on a source control file that should be updated and won't update. Simple answer is to add to an ignore and delete the settings file.
I have Visual Studio 2017 Professional on Windows 10.
I have observed this under several circumstances:
MicroSoft decided I needed some critical update for Windows and it installed while I was working - causing some of the VS components to crash.
Visual Studio update was received in background.
Some component of Visual Studio crashed - not the VS just some attached feature (did not note exactly which one)
No known cause.
In each of these cases I did in order (sometimes it worked after each of these)
Build / Rebuild solution
Build / Clean Solution
Close and Restart Visual Studio
Remove Symbols cache, restart VS
Close BOTH VS and SSMS and restart them
Close VS and Restart Windows
Close VS, force all pending Windows updates to load, restart Windows
In options, Uncheck Codelens/apply and re-check/apply (OK button)
I tried most of the solutions above without luck, as I also saw this problem. On top, certain newly added classes were showing up as white/black (regular text) in Visual Studio.
Changing to Release typically helped, but wasn't a long-term solution.
However, this helped on both issues - verified on another machine. Maybe some of the steps can be left out.
Close all document tabs
Clean solution
Right click on solution, click "Enable Lightweight Solution Load"
Close solution
Reopen solution
Right click on solution, click "Disable Lightweight Solution Load"
Close solution
Reopen solution
Rebuild
Explicitly enable CodeLens in the workspace settings.json:
// show code lens on editor
"editor.codeLens": true,
Verify that the following properties show on the editor:
// inline count of reference for classes, interfaces, methods, properties,
// and exported objects
"typescript.referencesCodeLens.enabled": true
I could fix my problem with C# CodeLens and Omnisharp.
My C# extension was 1.25.0.
What I did to fix my problem:
C# extension -> Unistall -> Install another version -> Version 1.24.4
After that in the settings I searched for "omnisharp: use global mono" and set it from "auto" to "alwayse".
Then restart Omnisharp and wait for it to compile and show references.
Removing data from %temp% folder resolved my issue in VS 2022.

Visual Studio 2013 - User types color is gone

Just installed Visual Studio 2013 (it seems there was no choice - tried to download vs 2012 from Microsoft but they automatically redirect me to 2013...).
I noticed that all those things that used to be colored in turquoise - like classes, types, attributes - are now plain black! I mean all those things that trigger the little blue "smart tag" thingie that when you press ctrl+dot you get a little option to add the appropriate "using" statement.
I've looked through and through in the tools > options > fonts and colors. In vs 2012, under "display items", there were entries such as "user types - XXXXX" which were colored turquoise. But in 2013 they're gone too! :-(
Productivity power tools is not installed...
Anyone?
For others who run into this, where the accepted answer doesn't work: try closing your project and deleting your suo file.
I tried devenv.exe /setup (as an admin, in a VS command prompt), I tried changing and restoring themes, I tried rebooting, etc. Nothing worked, but deleting my suo file fixed it.
I had the same issue in VS2013, fixed that with devenv.exe /setup
See
How can I get user type C# syntax highlighting working again in VS 2012 RC?
If you've installed the preview of Roslyn, unintstall it. This worked for me.
Disabling and then enabling Productivity Power Tools 2013 extension resolved the issue for me.

Why is Visual Studio 2013 very slow?

I'm running Visual Studio 2013 Pro (RTM version) on my formatted PC (Windows 8.1 fresh install).
I don't know why, but Visual Studio 2013 Pro is very very slow! Slow for building, debugging, navigating in the IDE... my hard disk drive LED is not lighting up at all!
I'm on a little MFC (C++) project using the Boost library.
Any ideas?
It is something concerned with the graphics drivers. If you update them you will be fine.
Or you can disable the hardware graphics acceleration in Visual Studio according to these steps:
In Visual Studio, click "Tools", and then click "Options".
In the Options dialog box, navigate to the "Environment > General" section and clear the "Automatically adjust visual experience based on client performance" check box. (Refer to the following screen shot for this step.)
Clear the "Use hardware graphics acceleration if available" check box to prevent the use of hardware graphics acceleration.
Select or clear the "Enable rich client visual experience" check box to make sure that rich visuals are always on or off, respectively. When this check box is selected, rich visuals are used independent of the computer environment. For example, rich visuals are used when you run Visual Studio locally on a rich client and over remote desktop.
References:
You experience performance issues, product crashes, or rendering issues in Visual Studio 2013
Try to set Current source control plug-in to None (menu Tools → Options → Source Control), if you are using the Microsoft Git provider, which seems to slow Visual Studio 2013 down more and more the larger the repository gets.
I had the whole Dojo Toolkit framework under source control using the Microsoft Git provider, and it got to the point where there were delays from the time I hit a key to the time the glyph would appear on the screen. That bad.
When/if you need Git again, you can switch to the TortoiseGit provider or Git-Extensions, both will work without slowdown. I like Git-Extensions, personally.
I too have struggled a bit with bad performance in Visual Studio 2013 (Premium). Pretty much the same issues as TS had. Slow navigation, scrolling, building... just about everything. Luckily I have manage to solve my own problem by disabling Synchronized Settings in Visual Studio.
Go to menu Tools → Options → Environment-Synchronized Settings and remove this option by unchecking the checkbox.
In the case of web applications, another cause of slow building and debugging (but not IDE navigation) could be the Browser Link feature.
I found that with this switched on, building would take 4 times longer and debugging was painful - after every postback, web pages would freeze for a few seconds before you could interact with them.
I was using a solution upgraded from Visual Studio 2012. Visual Studio 2013 also upgraded the .suo file. Deleting the solution's .suo file (it's next to the .sln file), closing and re-opening Visual Studio fixed the problem for me. My .suo file went from 91KB to 27KB.
I had the same problem and the only solution that worked for me was to follow the three steps presented below:
Clean the WebSiteCache folder (you may find it at
C:\Users\%USERNAME%\AppData\Local\Microsoft\WebSiteCache)
Clean the "Temporary ASP.NET Files" folder (find it at
C:\Users\%USERNAME%\AppData\Local\Temp\Temporary ASP.NET Files)
Restart Visual Studio
What fixed it for me was disabling Git by setting Current source control plug-in to None in Visual Studio, menu Options → Source Control:
This issue seems to be because of uninstalling the SQL Server Compact edition (4.0).
I was having this issue, and it got fixed after installing the SQL Server Compact edition 4.0.
On closing Visual Studio 2013, I was getting a message to install SQL Server Compact edition as a C++ project needed some thing... can't put finger on anything.
Resolve this issue by installing Microsoft SQL Server Compact 4.0
Microsoft SQL Server Compact 4.0
I can advise an option like this.
CodeLens can be disabled like as at the picture. It gives a lot of performance goodness.
If you are debugging an ASP.NET website using Internet Explorer 10 (and later), make sure to turn off your Internet Explorer 'LastPass' password manager plugin. LastPass will bring your debugging sessions to a crawl and significantly reduce your capacity for patience!
I submitted a support ticket to Lastpass about this and they acknowledged the issue without any intention to fix it, merely saying: "LastPass is not compatible with Visual Studio 2013".
I had the same problem and all the solutions mentioned here didn't work out for me.
After uninstalling the "Productivity Power Tools 2013" extension, the performance was back to normal.
One more thing to check; for me it was Fusion logging.
I'd turned this on a very long time ago and more or less forgotten about it. Getting rid of the 5000+ directories and 1 GB of logged files worked wonders.
There is a good workaround for this solution if you are experiencing slowness in rendering the .cs files and .cshtml files.
Just close all the files opened so that the cache gets cleared and open the required files again.
Visual Studio Community Edition was slow switching between files or opening new files. Everything else (for example, menu items) was otherwise normal.
I tried all the suggestions in the previous answers first and none worked. I then noticed it was occurring only on an ASP.NET MVC 4 Web Application, so I added a new ASP.NET MVC 4 Web Application, and this was fast.
After much trial and error, I discovered the difference was packages.config - If I put the Microsoft references at the top of the file this made everything snappy again.
Move the Microsoft* entries to the top.
It appears you don’t need to move them all - moving say <package id="Microsoft.Web.Infrastructure" has an noticeable effect on my machine.
As an aside
Removing all contents of the file makes it another notch faster too*
Excluding packages.config from Visual Studio does not fix the issue
A friend using Visual Studio 2013 Premium noticed no difference in either of these cases (both were fast)
UPDATE
It appears missing or incomplete NuGet packages locally are the cause. I opened the Package manager and got a warning 'Some NuGet packages are missing from this solution' and choose to Restore them and this sped things up. However I don’t like this as in my repository I only add the actual items required for compilation as I don’t want to bloat my repository, so in the end I just removed the packages.config.
This solution may not suit your needs as I prefer to use NuGet to fetch the packages, not handle updates to packages, so this will break this if you use it for that purpose.
For me, the problem was the Start page -- it was downloading content and causing Visual Studio to hang.
The only solution for me was to:
Kill the DevEnv process from Task Manager
Start Visual Studio in Safe Mode from the command line:devenv.exe /safemode
Go to menu Tools → Options, and select the Environment/Startup options
Choose "Show empty environment" for the startup action
Close Visual Studio
Restart normally
Running unit tests was slow. It was a ReSharper issue.
Menu ReSharper → Options → Environment → General ... Clear Caches
Menu Tools → Options → ReSharper → General ... Suspend Now
Close Visual Studio
Delete the .suo file.
Open Visual Studio again.
Re-enable ReSharper.
I also had an issue with a slow IDE.
In my case I installed
ReSharper
Npgsql (low chance to cause the problem)
Entity Framework Power Tools Beta 4
The following helped me a bit:
Disabled synchronization - menu Tools → Options → Environment-Synchronized Settings
Disabled plug-in selection - menu Tools → Studio → Options → Source Control.
Disabled Entity Framework Power Tools Beta 4 - menu Tools → Extensions and Updates
Uninstalled JetBrain's Resharper - WOW!! I am fast again!!
Change the Fusion Log Value to 0. It solved my issue.
This is the FusionLog key in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Fusion
Check ForceLog value (1 enabled, 0 disabled).
I was also facing this issue for quite long time. Below are the steps that I perform, and it works for me always:
Deleting the solution's .suo file.
Deleting the Temporary ASP.NET Files (You can find it at find it at %WINDOW%\Microsoft.NET\Framework\Temporary ASP.NET Files)
Deleting all breakpoints in the application.
Visual Studio 2013 has a package server running, and it was spending up to 2 million K of memory.
I put it to low priority and affinity with only one CPU, and Visual Studio ran much more smoothly.
Performance Explorer
Have you been using menu Analyze → Performance and Diagnostics? I have! It's awesome! But you may want to clean up.
Open the Performance Explorer. If you collapse all of the items in there, select all, then you can right click and do Delete.
My solution opens faster and is in general running much faster now.
Also you may notice changes to your sln file as shown. For me, this section was deleted from the sln.
GlobalSection(Performance) = preSolution
HasPerformanceSessions = true
EndGlobalSection
In Visual Studio 2015 Community edition, I've experienced a very (very) slow IDE after changing the "Environment Font" on menu Tools → Options... → Fonts and Colors.
Reverting this options back to the default value ("automatic") solved it immediately.
I had similar problems when moving from Visual Studio 2012 → Visual Studio 2013. The IDE would lock up after almost every click or save, and building would take several times longer. None of the solutions listed here helped.
What finally did help was moving my projects to a local drive. Visual Studio 2012 had no problems storing my projects on a network share, but Visual Studio 2013 for some reason couldn't handle it.
I had a Visual Studio 2013 installed, and it was running smoothly. At some point it started to get sluggish and decided to install Visual Studio 2015. After install, nothing changed and both versions were building the solution very slow (around 10 minutes for 18 projects in solution).
Then I have started thinking of recently installed extensions - the most recent installed was PHP tools for Visual Studio (had it on Visual Studio 2013 only). I am not sure how can an extension affect other versions of Visual Studio, but uninstalling it helped me to solve the problem.
I hope this will help others to realize that it is not always Visual Studio's fault.
I added "devenv.exe" as an exclusion to Windows Defender. This solved my problem completely. People can try this as their first try.
I have the same problem, but it just gets slow when trying to stop debugging in Visual Studio 2013, and I try this:
Close Visual Studio, then
Find the work project folder
Delete .suo file
Delete /obj folder
Open Visual Studio
Rebuild
None of the suggestions worked for me, but I did solve my problem. I had tried most of the other recommendations before coming to the following solution.
My Scenario/Problem:
Using Visual Studio 2017 with ReSharper Ultimate. Keyboard input in the IDE got super slow as others have described. The last change I made to my solution was to add a new web site project, so I looked into that. After trying a lot of things, I tried adding a second web site project, so I could try to replace the first one, and Visual Studio just tanked after that. It wouldn't even load the solution anymore.
My Solution:
I forced Visual Studio closed and then I removed the newly added web site project(s) from the .sln file using Notepad. After saving and starting Visual Studio, my solution loaded quickly and everything seemed to be back to normal. I added a new Web Site with a slightly different configuration (see the thinking below), and the problem did not present itself again.
My Thinking:
I think the problem stemmed from creating the new web site project and using a file system path to a network share that is hosted in Azure. I'm working over VPN which tends to slow things down, and I occasionally experience various routing problems with some services, so my problem/solution might be a bit of a snowflake. I changed the file system path to be a local repository and will publish the files as needed which seems like a much better way to go.
I had a Visual Studio behavior where the typing was slow for my HTML files. Previously when I installed, I guessed that because my HTML files were generic HTML that the need to install any web development tools from the workload component of the installer was unnecessary. I went back and installed this bit and Visual Studio behavior became as I expected it.
This already has a bunch of answers here, but a general way to easily boost Visual Studio is to clear your temp files.
Press the Windows Key and R, and enter 'temp'. Press enter, and provide any administrator permission if you need to. Then press Control A to select all, and hit the Del key. Remember to provide any administrator permissions, and if 'the item is already in use' then just press skip.
After this, Press Windows Key and R again, but this time type '%temp%'. Repeat the previous steps in the new directory.
Finally, empty the recycle bin.
This might not help a ton, but it should boost general performance.

Visual Studio has stopped working - on Win 7

I have Win 7 Enterprise. If i open any .cs file on VS 2008/2010 it gives a message " Visual Studio has stopped working" on a dialog box. There are two buttons "Debug" and "close program". Debug button starts devenv in debug mode with assembly code as i do not have the pdb file for the same.
There is another machine with same configuration where the VS 2008/2010 Ultimate works fine. Even reinstalling Win 7 did not solve the problem. Any idea why it is happening?
Try with some standard VS troubleshooting steps:
Clean the solution
Delete / rename all files in your solution created by VS, i.e. all .ncb, .suo, .user files
Launch Visual Studio with all add-ins disabled: devenv.exe /SafeMode
Reset All Settings: Tools -> Import / Export Settings -> Reset All Settings
Delete HKCU:\Software\Micosoft\VisualStudio\9.0 and then restart Visual Studio
Repair the Visual Studio installation through Add/Remove Programs
Recently I had the same problem, there is not much help on the Internet. So I thought this could be an easy fix. I re-install Visual Studio Several times but no luck. Finally, I uninstall .NET Framework along with Visual Studio, re-boot and re-install.
It worked fine !!
I thought it might help someone.
VS 2012 Stopped Working
I couldn't open a project or create a new one without it crashing
I was getting this error...
System.ComponentModel.Composition.ImportCardinalityMismatchException was unhandled
Message=No exports were found that match the constraint:
ContractName Microsoft.VisualStudio.Language.Intellisense.IGlyphService
RequiredTypeIdentity Microsoft.VisualStudio.Language.Intellisense.IGlyphService
InnerException:
However, as mentioned above this worked for me:
Launch Visual Studio with all add-ins disabled:
devenv.exe /SafeMode
Reset All Settings: Tools -> Import / Export Settings -> Reset All Settings
Hey i had the same problem some time back but was solved when i installed this patch fix.
Check it out here -
http://connect.microsoft.com/VisualStudio/Downloads/DownloadDetails.aspx?DownloadID=26662.
For me ... one of extension I installed earlier is the culprit. That extension is some sort of code reflector. That tool manage to slow down my debugging when i step forward. And make visual studio 2012 constantly crashing. So my advice is be careful what tools and extensions you install... especially those that are not created by Microsoft themselves.
In my case the crash was caused by the parallel project builds. After went to Options -> Projects and Solutions -> Build and Run and set maximum number of parallel project builds to 1, the crash was gone.
There could be multiple issues even in the code if the call to an async method an awaiter is missing.
If everything seems to correct from code-wise then clean the solution and delete all the obj and bin fill from all project. Start building the solution again.
This worked multiple times in my scenario.

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