I've just upgraded Visual Studio 2017 to 15.9.13. After doing so, 2 of the 3 C++ solutions I am currently working on no longer build. The following errors are shown:
1>The value "Value is not created." is not of type "Microsoft.VisualStudio.ProjectSystem.Build.IVsLoggerEventProcessor2" and cannot be used in this generic collection.
1>Parameter name: value
1>Error: The value "Value is not created." is not of type "Microsoft.VisualStudio.ProjectSystem.Build.IVsLoggerEventProcessor2" and cannot be used in this generic collection.
1>Parameter name: value
The other one builds ok. This happens when trying to build/compile/clean anything in the solution. The two non-building solutions are creating exes. The building solution is creating a DLL. I've inspected the vcxproj files to see what the differences are and tried copying various bits between them but that makes no difference. Googling doesn't give any answers either.
the only reference I can even find to IVsLoggerEventProcessor2 is on
this page.
Deleting the .vs directory in the project folder seems to have done the trick.
The problem
Suddenly, Visual Studio (2015 RC) started throwing error CS7069 in my face a lot. It states
Reference to type '...' claims it is defined in '<assembly>', but it could not be found.
Yet VS's functionality "Goto reference" did function and squigglies weren't consistently present, so I figured something weird was going on.
How I created the problem
It started when I was refactoring/splitting a project. I was moving .cs files from one project to a new one. Types that I moved to the new project couldn't be found anymore by the compilation process of a project that referenced both projects.
What I tried
I verified that the relevant assembly was indeed referenced, present and had the type with public modifier. I rebuilt it, checked version numbers (of target frameworks etc), removed the relevant reference and re-added it, cleaned solutions and projects, checked configuration manager settings, removed all VS's temporary files and whatnot, and I couldn't fix the bug for 4 days. 4 long days, might I add.
Googling didn't result in anything either, so I hope that the next poor fellow who made the same mistake as I did finds this page, as I finally found out what was going on:
I had two projects with identical assembly names...
Renaming the new assembly in its properties menu made all errors vanish.
Fixed bug on Visual Studio 2015.
Go to Tools menu, Options, Debugging, General: Check: "Use the legacy C# and VB expression evaluators"
Try to clean/rebuild the project. It helped me.
Also try to remove all of the *.suo and *.user files in your solution folder
http://blog.galasoft.ch/posts/2014/01/quick-tip-what-to-do-when-visual-studio-freaks-out-and-everything-is-red/
I had this problem and it turned out I had the wrong build configuration selected. The reference projects and the project I was building were not selected for that build configuration. Simple to fix, but not something I looked at for a while.
So I've been working on a WPF project with Visual Studio 2010 for awhile. I'm using several class library projects with WPF controls that I wrote. Today I opened the solution in Blend for the first time, and it showed me many errors like this:
"the name xxx does not exist in the namespace yy"
Looking at the assembly, I can see that the class appears at that namespace. Also if it didn't, Visual Studio wouldn't have compiled it, right?
I checked similar questions, and no, I don't have the x86 build platform thing, all my DLL's are .Net 4.0, and no missing references.
Is there anything else?
Looks like some Bug in Blend. I fixed this by removing the project references and then adding it back again
In our current 50+ project visual studio solution some of the project references are like so :
FulfillmentOnly.Messaging (FulfillmentOnly.Messaging\FulfillmentOnly.Messaging)
Instead of
FulfillmentOnly.Messaging
Sometimes two will appear like so, which causes ambiguous reference errors.
FulfillmentOnly.Messaging
FulfillmentOnly.Messaging (FulfillmentOnly.Messaging\FulfillmentOnly.Messaging)
Any idea what causes these strange Project references?
I think this sometimes happens when you have solution folders with the same name as one of the projects, in your case FulfillmentOnly.Messaging. You can probably edit your csproj files manually, at least I seem to remember doing this myself. Visual Studio will find the correct project if you remove the extra directory part.
Good luck!
Why do I get the following error when building a setup project?
An error occurred while validating. HRESULT = '80004005'
One project in solution had ToolsVersion="4.0" (in .csproj file), changed it to ToolsVersion="3.5" and setup project builds fine.
Both of the reasons I found are already in other answers, but they are in separate answers and not fully explained. So, hopefully this will combine the possibilities and give good means of debugging each. :)
Common Reason
My problem was not a dependency error. However, that does seem to be the common reason. So, basically, you need to check your MSI file and make sure that all dependencies are still valid. Probably the best blog response on how you can easily resolve this if it is a dependency issue is An error occurred while validating. HRESULT = '80004005'.
Extract from blog:
Follow steps below to troubleshoot.
If you have multiple project outputs in your solution, identify the project that is giving the problem. You can do that by removing one project at a time from the Setup Project(S) until error goes away.
Once project is identified, identify the reference that could be giving the problem.
Check if the project(A) is referencing to a project that has been removed from solution. - Remove such references if any.
Check if the Project(A) is referencing to a project that was moved to a diffenrent physical location after it was added as a reference. - Remove and add such references.
Rebuild setup project after fixing the reference accordingly to see if error goes away.
Alternative Reason
My problem had to do with Visual Studio versioning, however. So, if your dependencies are valid and you still are getting this problem, then you resolve this if it is a problem with VS2010 .
Basically, if you run MSBuild and see this warning:
Project file contains ToolsVersion="4.0", which is not supported by
this version of MSBuild. Treating the project as if it had
ToolsVersion="3.5"
Then the problem is Visual Studio versioning. This means that one project was opened or created in Visual Studio 2010 and then saved or added to an existing 3.5 solution. I simply searched all files in my project for ToolsVersion="4.0" and found the offending .csproj file, opened it in a text editor and manually changed the 4.0 to a 3.5.
This error is related to a dependency error. I removed all references to my primary output project and added them again. It now compiles OK!
I ran up against this issue today. The solution in my case? Restart Visual Studio 2008.
In my case my solution (VS2008) had a project that was also referenced from another solution (VS2010). In the VS2010 solution I had upgraded the project to .NET 4.0. When I later realized the project was also used in another solution I downgraded it to .NET 3.5. For some reason everything seemed to be changed correctly in the csproj file except one place which is mentioned here: Error in setup project HRESULT = '80004005'
I know this is already solved somewhere else but I wanted to shed some light on this from another problem angle.
While simply removing and re-adding the project dependencies will work in many cases, it is important to note that:
The error message "An error occurred while validating. HRESULT=80004005."
usually happens when project is referenced to the other project which is
not added into the currect [sic] solution. Setup project only supports
dependency projects within same solution.1
I have spent enormous time on this one myself, though none of the above worked. But I have found another solution with a registry hack, you need to add a new DWORD (EnableOutOfProcBuild) value of (0) to HKCU\SOFTWARE\Microsoft\VisualStudio\14.0_Config\MSBuild\EnableOutOfProcBuild
Note: this is for Visual Studio 2015
In my case I had installed Visual Studio 2010 alongside Visual Studio 2008. My setup project, when opened in Visual Studio 2008 gave the same error, but was OK in Visual Studio 2010.
If copied to another machine that did not have Visual Studio 2010, but did have Visual Studio 2008, then it would compile.
I installed Visual Studio 2010 and converted the solutions to that version. Because of performance issues I changed my solutions back to Visual Studio 2008. Everything was better now but I got an error when I tried to compile the setup project. I realized that I had a Visual Studio 2010 Test Project in my solution so all I had to do was unload the Test Project and Build the setup project again.
Summary: unload any Visual Studio 2010 project in solution.
I hope it helps.
I know this is kinda old news, but my particular issue and solution are not specifically stated here (as far as I can tell - if I missed it, I apologize).
I had same problem. It would not compile my project, but had no errors. All I could see was "Build Failed". I opened up the "Output" file (Click View--> Output on menu), and it told me exactly which reference (in my case a .dll) was causing the problem.
I deleted and recreated the reference and it changed the reference name from Microsoft.Office.Core (which was appearently only a 32 bit version) to "OFFICE". Then everything worked great. -- Make sure to make a note of the path to the file you are referencing in the properties window... My new path was exactly the same, but the reference name changed anyway.... still scratching my head on that one...
So the moral of the story is... When you get no errors and your build fails, check the "Output" tab and it might help.
I read this answer from another post on Stack Overflow, and it has worked for me.
Open your setup project file (.vdproj) in Notepad (or any other text editor). Delete these lines at a beginning of the .vdproj file:
"SccProjectName" = "8:"
"SccLocalPath" = "8:"
"SccAuxPath" = "8:"
"SccProvider" = "8:"
Build again - the error is gone. That error didn't stop me from deploying, building, debugging (or anyting) my project; it just annoyed me. And it came on even if I set all projects to be build in a current configuration and the setup project not to.