I am a little baffled as to why this is occurring. I have been cruising along just fine -- made a couple changes / rebuilt (builds just fine) and all of a sudden no matter what I do I get the following exception when I try to debug..
Could not load file or assembly
'System.Data, Version=2.0.0.0,
Culture=neutral,
PublicKeyToken=b77a5c561934e089' or
one of its dependencies. The system
cannot find the file specified.
Any ideas how to get this back to how it was before? I even undid the changes I made (that really shouldn't have had anything to do with this) to no avail.
If a "Windows" update recently patched the .NET framework version you're referencing, the compiler may think there's a versioning difference.
If this were the case, try rebooting, and possibly re-checking updates. Failing that, re-installing the .net framework version, and letting the updates get re-applied. I had a similar issue with another System component after once installing a trial version of XNA 4.0, and then uninstalling it.
Ensure that you have System.Data still added as a project reference. If so, be sure to then exist Visual Studio and go back in. Then do a "clean" and "Build" and you should be set to go.
Related
So I'm trying to compile a project on VS 2017, and I'm getting this:
warning MSB3258: The primary reference "someLib.dll" could not be resolved because it has an indirect dependency on the .NET Framework assembly "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" which has a higher version "4.0.0.0" than the version "2.0.0.0" in the current target framework.
After that, I have errors relating to this dll (for example, a type or namespace not being in the namespace), but when I double click the error it disappears, along with the red squiggly line in the code, hinting at the fact that it's not the actual problem.
Nothing I tried is working: all of the projects are on 3.5, I removed and re-added all of my references, and it doesn't happen in any other computer except my own. I also tried removing mscorlib from the GAC (however dumb that may be), but of course it won't let me.
I saw something that may be relevant:
https://developercommunity.visualstudio.com/content/problem/230636/assemblydependency-now-misidentifying-indirect-dep.html
Other than removing and reinstalling VS, not sure what to do.
If anyone has any idea, I'd be glad to try it.
It was a weird reference to a version of Interop.Shell32.dll called just "Shell32.dll". Don't know where it came from.
If anyone else has this issue: remove each dependency one at a time and compile. Even the Microsoft ones.
Answer from comments:
Check the libraries someLib.dll references. Maybe they contain a reference to mscorlib.dll 4.0.0.0.
Hint: add official Microsoft libraries via Via Add Reference > "Assemblies tab" (on the left, don't know if tab is correctly named). Don't add them by browsing for them.
I am currently working on a Xamarin project, and I required something that Xamarin on it's own doesn't support, so I looked for solutions. After messing around with some NuGets, my project ended up with a bunch of weird and unexplainable compile errors, popping up and disappearing randomly.
Eventually I realized that I removed a NuGet from the shared project, but not the UWP one. After removing it from UWP, the program compiles and runs. But seems that there is some more damage done...
However, when I try to call a method of a class defined in a different file, it throws a System.IO.FileLoadException, which it previously wasn't doing. The complete Exception message is:
System.IO.FileLoadException: 'Could not load file or assembly 'System.ServiceModel.Primitives, Version=4.5.0.3, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)'
After a bit of digging, it concluded that it is probably caused by a missing nugget, which I must've deleted by a mistake. So I installed a 4.5.3 version. Didn't help. Restarted Visual Studio, no effect.
I can't install any earlier versions, as it is considered being a downgrade by something. Any clues how to deal with this?
I had the same problem in my UWP project.
My solution was to remove checking if the exception is a FaultException. It seems like FaultException is not supported. After removing the check my method works fine, I could step in etc. Hopefully this helps you too and solves your problem.
My case it solved by update the System.ServiceModel.Primitives for .NET Standard to 4.4.4. version as mentioned below,
https://github.com/dotnet/wcf/issues/3088#issuecomment-411603736
On a new Win8.1 reinstall, with all of my code restored from backup, I'm suddenly now getting a Visual Studio warning when I build the main project of my solution:
Found conflicts between different versions of the same dependent assembly that could not be resolved. These reference conflicts are listed in the build log when log verbosity is set to detailed.
I set the Output log level to Detailed and I found a few entries like this:
There was a conflict between "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" and "mscorlib, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e, Retargetable=Yes". "mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" was chosen because it had a higher version.
Trouble is, I'm not referencing mscorlib anywhere in the solution—old or new. I have a couple of apps on my machine that require .NET 3.5, but I can't see how that could be related.
One difference: the old Win8.1 install on which this warning did NOT occur was a standalone machine; this time I'm domain-joined. I don't know whether that makes a difference (I can't see how), but I thought I ought to mention it at least.
Having different versions of a Nuget package on different projects may cause this problem as well. Make sure that all your packages have the same version:
(Within Visual Studio) Right click on the solution
Click on Manage Nuget packages for Solution
Click on the Consolidate tab
For every package in the Consolidate tab, update the package to the same version for every project.
I was able to fix this by issuing an update-package -reinstall command at the Package Manager Console.
BUT
Be careful, updating all the packages in your solution could cause other problems, make sure you can roll back to a good version if it goes wrong!
I have been able to fix this issue by deleting my ".suo" file of my solution and then re-opening the solution. I then rebuild the solution and the issue is gone.
The ".suo" file is within the ".vs" folder which is what I usually delete.
Good luck!
I solved this by setting my verbosity to Diagnostic as per this answer.
Once I did that and rebuilt my solution, the build log actually listed the specific packages that depend on the two different versions of mscorlib.
In my particular case, my project had references to version 2.0.20126.16343 of System.Net.Http. I opened up the NuGet Package Manager and updated this package to the latest version (4.3.4 at the time). The next time I built my solution, the warnings were gone.
Well my solution is a little bit simpler than all of the above. I simply added a reference to the two Assemblies throwing this error (System.Runtime.Serialization and mscorlib) and rebuilt the project. By doing this, I specified the 4.0.0.0 version and removed the ambiguity.
One of the two (mscorlib) couldn't be added via the GUI because of the "A reference to 'mscorlib' could not be added. This component is already automatically referenced by the build system." error.
I needed to open the .vbproj (.csproj) file and add a reference manually via:
<Reference Include="mscorlib" />
I've tried all the following, but none has resolved the issue.
the command "update-package -reinstall".
Update and package via Consolidate tab.
Removing the ".suo" file.
However, My issue was a different case, I guess the new version of Xamarin.Forms package has used a different version of mscorlib. so I've downgraded it and it works fine.
I suggest you try all above solutions and also try to find which package is conflicting.
Following Memet Olsen's advice using VS2017 community...almost identical:
Right click Solution in Solution Explorer.
Select 'Manage Nuget Packages for Solution'
Check the packages. If any of them have a blue up-arrow rather than a green tick use the 'update' button
I also have tried all of the proposed solution to no avail.
In my project, this warning message was caused by a dll reference having a dependency on a different .net framework than the one that is targeted by my project.
In order to find out which dll reference was causing the warning, I simply used .net reflector to explore each dll reference to find out which one was referring a different .net framework (mscorlib).
In order to fix the issue, the reference dll has to be updated to a version which targets the same .net framework as the project using it, if such a version exist.
Hope this helps.
I'm just trying to get started with NDjango but am having issues running a basic test app. When running the page in either debug or release the following exception is thrown:
Could not load type 'Microsoft.FSharp.Core.CompilerMessageAttribute' from assembly 'FSharp.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
This is thrown when the NDjangoHandle is created in the HttpApplication ctor. The fsharp assemblies are definitely all there in the gac (and they seem to be distributed with NDjango too) so I'm a bit confused about this one. Googling this turns up zip.
I'm using NDjango 0.9.7.0 for .NET 4.0 in vis studio 2010
Cheers
Did you install FSharpPowerPack? I am not sure if it was stated clear enough in the installation package but it is required and it does not come with the standard installation.
Also - by any chance do you have a side by side installation of VS2010/VS2008? The FSharp installation package has a bug which can cause similar problems
Let me know if you need further help. You can communicate with us directly through bug tracker and/or mailing list
We code in C# using VS2008 SP1. We have a server that runs Team System Server 2008 which we use for source control, tasks etc. The server is also our build machine for Team Build. This has been working just fine for a long time. Untill now. We get these error messages when trying to build one of our projects that has a reference to one external assembly (this happens both via Team Build, and when logging on physically and doing a regular build via Visual Studio):
C:\WINDOWS\Microsoft.NET\Framework\v3.5\Microsoft.Common.targets
: warning MSB3246: Resolved file has a
bad image, no metadata, or is
otherwise inaccessible. Could not load
file or assembly 'C:\Program
Files\Syncfusion\Essential
Studio\7.1.0.21\Assemblies\3.5\Syncfusion.XlsIO.Base.dll'
or one of its dependencies. The module
was expected to contain an assembly
manifest.
C:\Program
Files\MSBuild\Microsoft\VisualStudio\v9.0\ReportingServices\Microsoft.ReportingServices.targets(24,2):
error MSB4062: The
"Microsoft.Reporting.RdlCompile" task
could not be loaded from the assembly
Microsoft.ReportViewer.Common,
Version=9.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a. Could
not load file or assembly
'Microsoft.ReportViewer.Common,
Version=9.0.0.0, Culture=neutral,
PublicKeyToken=b03f5f7f11d50a3a' or
one of its dependencies. The module
was expected to contain an assembly
manifest. Confirm that the
declaration is correct, and that the
assembly and all its dependencies are
available.
The referenced component
'Syncfusion.XlsIO.Base' could not be
found.
These errors are for one project with one problematic assembly reference. When I try to build the entire solution there are of course many more errors because of this one. And there are two other projects that has the same problem with other assembly references. I have a list of the referenced assemblies that VS can't seem to resolve:
Microsoft.ReportViewer.Common
Microsoft.ReportViewer.WinForms
Syncfusion.Compression.Base
Syncfusion.Core
Syncfusion.XlsIO.Base
The Syncfusion assemblies are from a 3rd-party component package. The other two are related to the Microsoft ReportViewer component.
The references has been added via the Add Reference window, in the .NET tab, so I don't think there is anything suspicious about that. In the properties window for the assembly reference, there is no value in Culture, Description, Path, Runtime Version or Strong Name. Version says 0.0.0.0 and Resolved is False. I guess it is pretty obvious that VS cant resolve the reference. My question is why??? I've scratched my head a lot over this one. This only occurs on the server, the solution builds just fine on both my machine, and my coworkers machine. The assembly reference properties are fine on our machines.
I have tried uninstalling the 3rd-party component (on the server of course), and then reinstalling it again. Didn't help. I tried to repair the VS2008 installation. Didn't help. Tried to retrieve an earlier version from source control (that I know has buildt on the server before), and I got the same error messages. I have checked file permissions, and everything appears to be in order. I am running out of ideas...
How do I solve this?
Update 16.02.2009:
I have tried to compare ildasm output of the dll on my pc and on the server (see the comment I wrote about that), and there is one small difference in a line that to me appears to be a comment. I must admit that I don't understand why there is a difference at all, so maybe someone could explain that to me?
I also tried running a virus scan on the server. Didn't help. Tried to remove the reference and then readd it by browsing to the dll on disk. Didn't work.
Update 17.03.2009:
I've found the solution! The culprit was the TruPrevent module of Panda Antivirus. After disabling the module, everything works! =)
I discovered this with the help of fuslogvw.exe and the log it generated. Googled the result, and stumbled upon this blog entry.. Hope this can help somebody else to.
Almost certainly the problem is environmental - not source related.
Some ideas ...
(i) Try disabling your anti-virus/anti-malware tools - I've seen cases where these tools (particularly Trend Micro Antivirus, for some reason) can keep a DLL file locked after (during?) scanning, interfering with compilers.
(ii) Check your PATH environment variable. Even in these modern days, the PATH variable is used to resolve some things - if this is messed up (too long, maximum length is 2048 characters IIRC) then things can be odd.
(iii) You've checked File permissions - have you checked permissions in the registry? For example, SyncFusion installs its license key in both the User and Machine hives - if the build server can't read one or the other, could cause issues.
Good luck!
It could also be that the referenced assemblies are in the GAC on the dev machine, but not on the build machine. Get it out of the GAC, into your source repository, and reference it by path.
We've had the same problem, turns out the C drive was full (only had 28MB).
Freeing space resolved the issue, even though the build happens on D.
Do you see any differences between ildasm of this file
'C:\Program Files\Syncfusion\Essential Studio\7.1.0.21\Assemblies\3.5\Syncfusion.XlsIO.Base.dll'
on your machine versus on the server?
My suspicion is that the user that the build process is under does not have access to the folder that your 3rd party control is in. Since this functions properly on your machines, it is almost certainly user/permission specific.
Your 3rd party dll may depend on unmanaged dlls. Often it's because a specific version of the VC++ Runtime Dlls are missing.
Open the Dll with the Dependency Walker http://www.dependencywalker.com/ on your server and check for missing references.
Not sure if this'll help in your case, but I did have something similar before where a dll apparently got unregistered somehow, and running regsvr32 on the dll did the trick.