Cannot sign into Visual Studio 2017 - visual-studio

When I start, there is a popup saying that the evaluation period has finished. I simply need to sign into visual studio, but when I try I get this error:
Microsoft Visual Studio We could not refresh the credentials for the account Could not load file or assembly System.Net.Http, Version-4.0.0.0, Culture-neutral, PublickeyToken-bo3f5f7f11d50a3a or one of its dependencies. The system cannot find the file specified.
followed by:
Inheritance security rules violated by type: 'System.Net.Http.WebRequestHandler'. Derived types must either match the security accessibility of the base type or be less accessible.
I am on version 15.8.0. Needless to say this is a total disaster as it completely blocks further development.
Edit: I should say that this is a continuation of this this issue, which started happening after the last windows update. I have just done another windows update, and the problem still exists.

Run Visual Studio 2017
Before the sign in dialogue comes up quickly select Tools -> Options
Go to Environment -> Accounts
Select Enable device code flow when adding or re-authenticating an account
Click OK
Login through a browser

I ended up reinstalling Windows, which fixed the problem (no surprises there).

Related

Visual Studio 2017 HRESULT: 0x80070005 / E_ACCESSDENIED on project creation

I'm running Visual Studio 2017, version 15.0.0+26228.9
When I'm trying to create a new project via File > New > Project... in Visual Studio 2017, I'm receiving the following error message and the project is not created:
Access denied (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))
Don't mind the german message text in the screenshot:
This happens for every project template I use (e.g. C# WPF, VB WPF, C# Console App...).
If I try to create a project via the quick search box on the starting page of visual studio, VS just crashes instantly with no exception message at all:
Has anybody else ran into this issue and might know how to fix it?
I had the same error.
I solved it by following the procedure :
Shutdown all instances of Visual Studio
Delete %LocalAppData%\Microsoft\VisualStudio\15.0_f4938f75\privateregistry.bin file (the ID after 15.0_ may be different per machines)
Start VS as normal user
all credit for this should go to https://developercommunity.visualstudio.com/content/problem/31188/access-denied-error-1.html
Ok, I fixed it.
Long story short, the reason for the problem was an incomplete and/or corrupted setup.
But it was a rather bumpy road to the solution, including several un-installations and re-installations until I eventually figured out why the setup was indeed faulty.
Sometimes I got an exception during the installation, other times it finished just fine, but the HRESULT-error persisted when I tried to create a new project.
I my special case, this was caused by the corporate firewall, that blocked some of the setup packets from being downloaded by the web installer. I solved the issue by connecting to an open WiFi, that's not filtered by the firewall.
As I'm working with a standard user, UAC kicks in when I start any installation routine. When I first started the setup via UAC and connected to the free WiFi, it wasn't able to find the packet servers.
It took me a minute to realize that the admin user I used for UAC had his own internet proxy settings, that wouldn't work with the open WiFi.
After I logged on as administrator, disabled the proxy and logged on as my main user again, I ran the setup again - and it failed again with a bunch of "incomplete workload" messages. As frustrated as I was at this point, I simply ran it again via the "Change" button without even closing the webinstaller and this time it finally completed without any errors!
After this, I could start VS just normally and creation of a new project was possible.
So, if you experiencing any troubles like this, I would strongly recommend to run a "Repair" or "Change" installation just over your existing one but try to avoid any firewalls between you and the internet.
1/ open control panel -> program and future - > IIS Express -> select Repair
2/ Refresh some time -> open Visual Studio
This 's about IIS Express in your computer . you only need to repair it in control panel is ok .
I tried and success.
My solution,
The Clang-format caused this. just disable clang-format:
Options->Text Editor->C/C++->Formatting->General->Eable ClangFormat Support
I had the same error when I tried to create a test certificate.
I have just launched VS as administrator.
And everything is Ok
The below solution worked for me
Make sure all the instances of Visual studio are closed.
Go to %LocalAppData%\Microsoft\VisualStudio\15.0_****
Delete the file privateregistry.bin
I tried changing the version of .Net Framework from 4.0 to 3.5 while creating the project. This solved my error.
enter image description here
Changing version of Net Framework

Visual Studio doesn't authentificate me after I switch versions

In Visual Studio (no matter if 2013 Professional, 2013 Community or 2015 Community, they all behave the same on different machines in different places and networks like home, office, friends' places) can't seem to access my login information and asks me to re-enter user and password. Here is a screenshot of the message, followed by a rough translation because I use the German version:
Translation: "An error occured, and no user information could be accessed for "[email address]". Re-enter your login information for this account. (Link: Re-enter login information)
(box with my correct live id)"
I haven't found a way to get any details about what error occured where and when or why, which doesn't help. Apparently it does save which account I use, but without re-entering my log-in at least once a day, functions that rely on it (e.g. accessing TFS repositories that my account has rights to) do not work. It seems to have some correlation to the time since I last logged in, because even after rebooting the machine it still works correctly if I logged in before.
It's not preventing me from work, but it's still very annoying. I've spent quite some time on google, but when I look for keywords like "visual studio login error" or similar fitting things I find all kinds of pages mainly about Visual Studio Online, or pages that explain how to login inside of Visual Studio - nothing mentions this problem, so I suppose it isn't a very common one.
My internet connection in all places is usually pretty stable, and no other open application show any signs of connection problems, so I can all but rule that out as the cause.
It took a while, but it seems to be a problem only when I switch versions of Visual Studio. I.e., if I only use 2013 for a while, it works fine. If I then login with 2015, I get the error when I use 2013 again after that, and vice versa.
I've fixed this issue by allowing visual studio through the windows firewall, then restarting visual studio. It stems from parts of visual studio not having access to the authentication servers.
Press the windows key and search for "firewall" and select "allow a
program through windows firewall
Click "Allow another program..."
Choose Visual Studio from the programs list and click add
Restart (or start) Visual studio

Visual Studio 2010: "Source Control - Unable To Access Database"

Our team uses ClearCase here at work, and I absolutely despise the ClearCase Visual Studio plug-in. It is such an unnatural workflow for me. As a result, I uninstalled the ClearCase plug-in and simply use the cleartool command line utility, which has increased my productivity significantly.
However, I am now presented with a new annoyance. All our project files are configured to use Visual Studio Source Control hooks, and so when I first open the project, I get a super annoying error message:
Source Control - Unable To Access Database
The associated source control plug-in is not installed or could not be initialized.
Common causes for this error include server unavailability and/or incorrect workspace mappings.
O Temporarily work uncontrolled
o Permanentnly remove source control association bindings
Neither of the options given are what I really want to do, since the default temporarily solution bugs me every time I open a project, and the "permanent" solution hijacks my solution file.
Alternatively, I have gone to Tools -> Options -> Source Control -> Plug-in selection -> None. This still results in a Visual Studio message, albeit a slightly less annoying one.
What are my options? Is it possible to write a plug-in for Visual Studio that completely turns off this nuissance? I mean, could I write a Source Control plug-in that does nothing?
I think the issue here is Visual Studio was installed after ClearCase installation. I have faced similar issue and the only option is to un-install ClearCase and reinstall it.

How do I get the serial key for Visual Studio Express?

I am Visual Studio 2010 Professional user. But for a reason I need Visual Web Developer 2008 Express edition.
I downloaded this, but I need the serial key to activate the product, otherwise it will expire in 30 days.
When I go there, I got this error:
"Thank you for your interest in registering Visual Studio. We are currently experiencing issues with the registration process. We are working on this and will have it fixed as soon as possible. Please try to register your product again at a later time. We apologize for the inconvenience."
I tried for a long time, but I got the same error every time. Is there any other way to get the serial key?
I have an improvement on the answer #DewiMorgan gave for VS 2008 express. I have since confirmed it also works on VS 2005 express.
It lets you run the software without it EVER requiring registration, and also makes it so you don't have to manually delete the key every 30 days. It does this by preventing the key from ever being written.
(Deleting the correct key can also let you avoid registering VS 2015 "Community Edition," but using permissions to prevent the key being written will make the IDE crash, so I haven't found a great solution for it yet.)
The directions assume Visual C# Express 2008, but this works on all the other visual studio express apps I can find.
Open regedit, head to HKEY_CURRENT_USER\Software\Microsoft\VCSExpress\9.0\Registration.
Delete the value Params.
Right click on the key 'Registration' in the tree, and click permissions.
Click Advanced...
Go to the permissions tab, and uncheck the box labeled Inherit from parent the permission entries that apply to child objects. Include these with entries explicitly defined here.
In the dialog that opens, click copy.
Note that in Windows 7 (and 8/8.1, I think), it appears the copy button was renamed to add, as in add inherited permissions as explicit permissions.
In Windows 10, it appears things changed again. #ravuya says that you might have to manually re-create some of the permissions, as the registry editor no longer offers this exact functionality directly. I don't use Windows very much anymore, so I'll defer to them:
On Win10, there is a button called "Disable Inheritance" that does the same thing as the checkbox mentioned in step 5. It is necessary to create new permissions just for Registration, instead of inheriting those permissions from an upstream registry key.
Hit OK in the 'Advanced' window.
Back in the first permissions window, click your user, and uncheck Full Control.
Do the same thing for the Administrators group.
Hit OK or Apply.
Congratulations, you will never again be plagued by the registration nag, and just like WinRAR, your trial will never expire.
You may have to do the same thing for other (non-Visual C#) programs, like Visual Basic express or Visual C++ express.
It has been reported by #IronManMark20 in the comments that simply deleting the registry key works and that Visual Studio does not attempt to re-create the key. I am not sure if I believe this because when I installed VS on a clean windows installation, the key was not created until I ran VS at least once. But for what it's worth, that may be an option as well.
The question is about VS 2008 Express.
Microsoft's web page for registering Visual Studio 2008 Express has been dead (404) for some time, so registering it is not possible.
Instead, as a workaround, you can temporarily remove the requirement to register VS2008Exp by deleting (or renaming) the registry key:
HKEY_CURRENT_USER/Software/Microsoft/VCExpress/9.0/Registration
To ensure that this is working beforehand, click Help -> register product within VS2008.
You should see text like
"You have not yet registered your copy of Visual C++ 2008 Express
Edition. This product will run for 10 more days before you will be
required to register it."
Close the application, delete that key, reopen, click help->register product.
The text should now say
"You have not yet registered your copy of Visual C++ 2008 Express
Edition. This product will run for 30 more days before you will be
required to register it."
So you have two options - delete that key manually every 30 days, or run it from a batch file that also contains a line like:
reg delete HKCU\Software\Microsoft\VCExpress\9.0\Registration /f
[Edit: User #i486 confirms on testing that this workaround works even after the expiration period has expired]
[Edit2: User #Wyatt8740 has a much more elegant way to prevent the value from reappearing.]
Getting a product key is free. Here is how I did it:
I just downloaded the 2012 Express install ISO image. After install I got the message "This product will expire in 30 day(s). Registration is required for the continued use of Microsoft Visual Studio Express 2012 for Web."
On that same screen is a register online link. Clicking that I signed in with my live account, updated my profile, and got a registration key.
Visual C# Express 2005 ISO File does not require registration
I believe that if you download the offline ISO image file, and use that to install Visual Studio Express, you won't have to register.
Go here and find the link that says "All - Offline Install ISO image file". Click on it to expand it, select your language, and then click "Download".
Otherwise, it's possible that online registration is simply down for a while, as the error message indicates. You have 30 days before it expires, so give it a few days before starting to panic.

How do I fix an "Invalid license data. Reinstall is required." error in Visual C# 2010 Express?

I've tried to install Visual C# 2010 Express edition onto my PC, but whenever I try to run it, I get a error message.
Invalid license data. Reinstall is required.
I've already tried reinstalling it, and the message persists.
OS is Vista Home Premium. I already have VC# 2008 Express installed.
I am using Visual Studio 2013 and I have the same issue but it occurs when I try to open a solution that was made using Visual Studio 2010.
The solution for me is to open the solution file (.sln), using notepad and change this line:
[# Visual Studio 2010]
to this:
[# Visual Studio 2013]
I just right-clicked, and opened with Visual Studio XXXX (in my case 2015). Then save it. Done.
I have the same problem with Windows 7 Pro. Have tried everything suggested by the Microsoft people, including uninstalling, cleaning up, reinstalling both from the web installer and the VS2010 Express iso - with the same result every time.
To say it's frustrating is an understatement and the disinterest from Microsoft in fixing what appears to be a common problem (you can find lots of search engine 'hits' for the problem, none for a solution) is quite unbelievable.
Since this is virtually a virgin Win7 install, the only conclusion is that MS have broken their licesing checks again (why check for a license on a free product?).
Edit: Following further investigation I have concluded that the advice given by Microsoft is useless and does not attempt to diagnose the problem. It simply assumes a corrupt installation source. I believe that the problem is in fact corrupt permissions/ownership of registry keys. HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Licenses and subkeys needs to be owned by SYSTEM with admins having full access. On my affected system the owner cannot be displayed and no permissions are shown when viewed by admin.
I don't have the definitive fix for this so far, as I cannot adequately edit the permissions for the affected registry keys.
Re-installing Windows is an almost certain fix, but also an extremely drastic one.
I have had this EXACT problem with VS2010 Professional Trial / Evaluation download. I can provide clear and concise steps to reproduce:
Set your system clock ahead by 1 day (oops!)
Install the trial software.
Set your system clock back to the correct date.
Start VS2010, you will receive the vague message indicating "Invalid license data. Reinstall is required."
In my case, the resolution was quite simple - set the clock back ahead to the wrong date. The next day, I was able to set the clock back to the correct date and continue using the product.
Based on other answers to this question, it would appear there are numerous reasons that you could receive this message. This specific issue is most likely to be encountered by someone with a "virgin" install of Windows since it is not so difficult to set the clock incorrectly when setting up a new computer and then fix it later (and if you fix the clock hours after installing the product, it might be hard to put it all together and realize what happened).
Hope this helps someone else.
I had this issue but I was able to resolve this by right clicking and using Run as Administrator. This boots up the program just fine.
This worked for me on Vista. It's based on work-around at MS: http://connect.microsoft.com/VisualStudio/feedback/details/520110/invalid-license-data-reinstall-is-required
Download subinacl command line tool
http://www.microsoft.com/downloads/en/confirmation.aspx?FamilyID=e8ba3e56-d8fe-4a91-93cf-ed6985e3927b&displaylang=en
Run these commands:
subinacl /subkeyreg HKEY_CLASSES_ROOT\Licenses /setowner=everyone
subinacl /subkeyreg HKEY_CLASSES_ROOT\Licenses /grant=everyone=f
Start VS 2010 Express again and this time it asks for a license key.
(On Windows 7 Home I had to run the above commands twice before they worked correctly)
I got the problem when instelled MS SQL 2012 with IngegrationService, the MS Visual Studio 2010 (Isolated) was installed from sql installer .
This VS returned error: Invalid license data. Reinstall is required.
I've fixed the problem by reinstalling SSDT with MS VS 2012 (Integrated)
http://msdn.microsoft.com/en-us/jj650015
I had this problem when installing a new SQL Server 2012 standalone Server.
Cause: When installing SQL Managemnt Tools it will install the VS Shell. It seems like this is all you need but this ist not enough! (it actually shows it will install VS)
Strangly the path and the application are shown in windows put you can't open them without the error.
Fix: You need to also install "SQL Server Data Tools" via Feature Add with the SQL-Server.iso
Hope this helps someone... i took me quite a while.
I get this error only when trying to open older solution files. For instance, I've got VS2013 installed and this error message pops up when I double click on a VS2010 solution file.
Getting rid of it is so simple:
Launch VS2013
Open the old solution file by clicking
"File->Open->Project/Solution..." from the menu (or simply by
pressing Shift+Ctrl+O)
Save the solution with the new format by clicking "File->Save
Solution As..." and overwrite the old file.
It appears that this has been reported as a bug, but has been closed as "Not Reproducible". One suggestiong from the Microsoft supporter is to redownload and reinstall:
Please try downloading the complete ISO from http://www.microsoft.com/express/Downloads/#2010-All, mount it as virtual drive. Then execute Visual C# setup from the ISO media and select an option to remove the product. Once the Visual C# has been uninstalled, please try installing it again from the ISO media.
It sounds a bit far fetched to me, but you might want to give it a try.
If that does not help you, I would suggest that you either post a new bug report to Microsoft or vote to reopen the existing one (I am not sure if/how this is possible).
I have faced this problem when installing the Visual studio 2010 - C# express using the local administrator account, then trying to register the application using another account that doesn't have Admin privileges, due to corporate polices this account can’t edit in the Registry by any means, so suddenly that’s how I figured out how to solve this issue I open VS 2010 as a local administrator then entered the registration key, and it is worked , I don’t understand how do that Microsoft itself didn’t mention this solution or even try hard to investigate or solve this issue
I just encountered this problem on a virgin install with a system that has a bad clock battery (when I turn off the power, it resets the date/time. Syncing to time.windows.com again allowed me to run VS2010 successfully.
It was not the clock for me, and all the hours spent re-downloading and reinstalling were a waste of time (except for the last one, of course....).
Also, for some odd reason, just adding Read permissions to the HKCR node using psexec -i -s regedit did not work by itself.
To fix my problem on Windows 7, I made sure (using psexec -i -s regedit) that my login account had full control permission over every node in the registry and that the everyone group had read permission over every node in the registry, and did all of the steps in the following link (rebooting after each step):
http://windows.microsoft.com/troubleshootwindows7sp1
This is probably overkill, but after spending 10+ hours trying to get this working, I am just happy it works... Good luck!
I was stuck for several days with the same problem. Investigating the registry i found several keys in HKCR were i was denied access even as adminstrator. Among these keys were the Licences key. Tried a lot of things to resolve this access problem but could not fix it.
Finally i worked around this problem with a reinstall of Windows 7 - choosing the Upgrade option when prompted to choose between upgrade or a fresh install. Had to reinstall video drivers but all my programs and user accounts survived.
http://windows.microsoft.com/en-US/windows7/Installing-and-reinstalling-Windows-7
After the upgrade i have access to the HKCR\Licenses again and Visual Studio 2010 starts as expected.
I had this problem and finally got passed it. I tried the solutions above to no effect. (I set my license keys to open permissions, set my clock forward, etc.) After two days I gave up...
In the end, I installed VS 2012 Express, which could handle VS 2010 solutions but could not compile 2010 code (without a COFF error). After finding this article on requiring VS 2010 to be installed to compile 2010 solution in VS 2012, I reinstalled VS 2010 even though I assumed it wouldn't work on its own. I tried opening 2010 anyway and it worked!
Analysis: as per the previous correct note by reece (and the original workaround author), I used ProcessMonitor to see what devenv.exe tries to do and fails.
Unfortunately, it was attempting to read a number of reg keys which were not under the Licenses node (so it wouldn't have been enough to take ownership of the latter with subinacl). Furthermore, even after taking ownership, the affected keys still yielded "ACCESS DENIED". Doing it as Administrator was equally useless. Plus, Visual Studio didn't fall for any date change nonsense either.
Solution - Don't try this at home :D though: I downloaded pstools and ran psexec -i -s regedit to get System privileges, then I changed permissions on the entire HKCR node to allow Everyone to Read (:P what can I say, viva el comandante).
I want to point out that adding "Everyone" to have read permissions on HKEY_Classes_Root did fix this issue for me.
I am not sure exactly what permission is needed, but this "worked for me" ... YMMV
This may also occur if you are trying to invoke an xml file instead of the exe application.
An another solution I have found to work is the one mentioned Mac by over at SuperUser: https://superuser.com/questions/651261/how-do-i-fix-an-invalid-license-data-reinstall-is-required-error-in-visual-s
When simply reinstalling the Visual Studio 2010 shell doesn't work, he points out that installing it through SSMS 2010 can solve the problem:
I was able to resolve my issue without making any manual changes to
the Windows Registry by installing SQL Server Data Tools 2010, which
is also free and includes the Visual Studio 2010 Shell.
You don't have to go through the entire install process. I cancelled the process when it was done installing the shell and it worked our fine.
If you're here from Google and are experiencing this issue with GFI MailEssentials's config export tool, check to make sure you aren't trying to open WebMon.SettingsImporterTool.exe.xml instead of WebMon.SettingsImporterTool.exe
If you have "hide common file extensions" enabled, you will see the .exe but not the .xml
Just happened to me with a new install of Visual Studio 2010 ultimate in a new computer.
This new computer had the internal time correctly set, but the date was set to one day late. I installed Visual Studio 2010 with the incorrect date. Then, I noticed of the incorrect date and changed it by sync'ing with a NTP server, and from that moment Visual Studio 2010 would not work... so I'll have to stop using Visual Studio 2010 until DateTime.Now > installationDate.
I met the same problem yesterday.And I fixed already.
Please follow the steps:
Run setup.exe again; Change or Remove Microsoft Visual Studio 2010;
Upgrade license Key (Enter new license key); Complete.
GOOD LUCK !
To everyone who has internet connection. Don't mingle with your
registry it's just a waste of time. Set your CMOS clock right then
just click on the button that say's "Obtain registry key online" fill
up the form(two fields are only required) then the registry key would
show up to your screen then just copy and paste it. then everything
works fine. sorry I can't post any images I still need to earn more points...
Background: Visual Studio 2012 Pro installed by Administrator account.
As "Joe User" (member of Win 7 Users group, but NOT Adminstrators) I got the error message.
On reading this forum I concluded this is a generic error message.
Steps to fix:
As an adminstrator, open HK_CLASSES_ROOT.
Open context menu on the Licenses subkey
Select Permissions...
Set Full Control for all users.
Now log on as "Joe" again.
Voila!
Next, as Administrator change the permission on HKCR/Licenses back to read only for Users.
Two hints for developers.
If you can develop and run an application as an ordinary user, then presumably your poor
clients don't need admin rights to run it either.
Don't leak security information in "helpful" error messages. Microsloth are probably following their own advise and giving a vague and unhelpful error message here.
I have no idea why changing the permission to FC then back again to the original setting worked. I can only assume the Visual Studio writes something to that key the first time it runs.
While none of the above solution worked for me (else than running the application with an other username),Renaming the application folder in %appdata% fixed the porblem for me.
"C:\Users...\AppData\Roaming\Microsoft\MS Project"
I had this issue while installing dynamic ax setup in VM, while installing it was showing me to 'licence is not valid, Reinstall visual studio shell 2010 version', so i uninstalled the visual studio shell 2010 version and its following component and tried to install again the AX admin it worked.
I'm having this problem with Visual Studio 2015 installed.
ramonsantana over at forum.unity3d.com had the solution for me: https://forum.unity3d.com/threads/if-anyone-is-having-visual-studio-shell-2010-invalid-license-data-reinstall-is-required.298824/
Copied here for reference
Use regedit go to HKEY_CLASSES_ROOT and look for Visual Studio.DTE
Since i have Visual Studio 2015 CTP installed i have 3 DTE, one is
VisualStudio.DTE, the other Visual StudioDTE.10.0 and
VisualStudio.DTE.14.0 Go to VisualStudio.DTE.14.0 ( or whatever
version of Visual studio you have installed) and click CLSID.
Copy the
Default (Double click Default and Copy the key inside), now go back to
Visua Studio.DTE and double click the Default there and paste the key
you just copied.
Almost there
On VisualStudio.DTE go to CurVer and
double click the key there to Edit it. Change the 10.0 in the end to
12.0 or 13.0 or 14.0, depending on what version of Visual Studio you have and you are done.
Installing SQL server data tools for visual studio 2010 did it for me! SSDT has an VS2010 IDE along with it, which overwrites the required registry entries.
You can find SSDT here.
My problem:
VS works fine, but when I create new Solution Setup and Deployment it make Setup file but when I run this Setup file, it say: "Invalid license data. Reinstall is required."
subinacl do not work.
My PC:
OS: Windows 7 64bit.
Visual Studio 2012
My way:
Close Visual Studio
Run regedit.
Pull down HKEY_CLASSES_ROOT
Looking for Licenses
Right click on Licenses -> click Permissions... -> click Advanced -> click User you want edit -> click Edit -> choose This key and subkey -> check all Allow: Full Control, Query Value, SetValue, Create Subkey, Enumerate Subkeys, Notyfy, Create Link, Delete, Write DAC, Write Owner, Read Control... -> check Apply these permissions to objects... -> click OK -> click OK -> click OK -> Close Registry Edit
Start VS
Hope this help
This was my problem with my Visual Basic Net 2005.
This is how I got it solved:
Click start :-> type run (Or press win+r)
Type regedit
Click HKEY_CLASSES_ROOT
Click Licenses
Double click (Default)
Clear all text written in Value data field
Press Ok
Run again Microsoft visual studio
Believe it or not, I have found cases where this problem occurred due to a build error when the build error was due to an error in xcopy in the pre-build events.
We had this problem at a colleges computer, and after trying everything here we set to forget it and fix the error from xcopy. When this was fixed the Visual Studio 2010 shell error stopped popping up, for some reason.

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