Whenever I try to build any documentation using docfx, I get the following error in the metadata build step that uses msbuild to analyze the xml comments in the code of the csprojs:
Warning:MetadataCommand.ExtractMetadataWorkspace failed with: [Failure] Msbuild failed when processing the file 'C:\temp\docfxtest\docfx_project\src\src.csproj' with message: Could not load SDK Resolver. A manifest file exists, but the path to the SDK Resolver DLL file could not be found. Manifest file path 'C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\MSBuild\15.0\Bin\SdkResolvers\Microsoft.Build.NuGetSdkResolver\Microsoft.Build.NuGetSdkResolver.xml'. SDK resolver path: C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\Common7\IDE\CommonExtensions\Microsoft\NuGet\Microsoft.Build.NuGetSdkResolver.dll C:\temp\docfxtest\docfx_project\src\src.csproj
It seems that msbuild cannot be correctly resolved by docfx. Any idea how I could fix this?
Im using docfx version 2.56.5.0 on Windows and I also have VS Enterprise 2019 (16.8.2) and VS Build Tools 2017 (15.9.29) installed:
UPDATE:
I have now uninstalled the VS 2017 build tools completely and repaired the VS 2019 installation using the installer. I now get a different error when I run docfx. It seems that it can't find msbuild at all anymore.
Warning:MetadataCommand.ExtractMetadataWorkspace failed with: [Failure] Msbuild failed when processing the file 'C:\temp\docfxtest\docfx_project\src\src.csproj' with message: The SDK 'Microsoft.NET.Sdk' specified could not be found. C:\temp\docfxtest\docfx_project\src\src.csproj
Running msbuild -t:restore,build also shows that it can't find msbuild
'msbuild' is not recognized as an internal or external command
The targets are isntalled:
And so is the .NET Core workload:
Your Build Tool for VS2017 might have some problems due to some issues. The most issue is this:
C:\Program Files (x86)\Microsoft Visual Studio\2017\BuildTools\Common7\IDE\CommonExtensions\Microsoft\NuGet\Microsoft.Build.NuGetSdkResolver.dll
Either you lost the dll or the dll is damaged.
Update
1) First, you should check whether you have installed NuGet targets and build tasks workload and net core build tools workload. If not, please install it.
2) Second, please delete bin and obj folder of your project and then try again.
You should use msbuild -t:restore,build to build your project.
3) Third, try to Repair from vs_installer for your build tool. It will repair the related dll. And then delete bin and obj folder, use build tool to test your project again.
Important:
VS2017 does not support net core 3.1. You should note that. It supports <=net core 2.1.
So if you still want to use Build Tool of VS2017 for your net core project, you should try the the above three steps and then target your project to net core 2.1.
Besides, if you start msbuild by CMD, I think you should check your environment variable PATH and check whether you have configured the msbuild.exe from Build Tool of VS2017 on it. Instead, you could add C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\MSBuild.exe. This way is for VS2019.
=================================================
Update 1
The problem is that you have already installed a docfx tool by choco command line.
At the beginning, I always thought that you used docfx.console nuget package on your project and just invoke docfx.exe from C:\Users\xxx\.nuget\packages\docfx.console\2.56.5\tools\docfx.exe under command line.
Regardless of the installation of docfx.console package on your project, if you installed docfx tool by choco command and then just invoke docfx.exe on command line, it used the local docfx.exe under C:\ProgramData\chocolatey\lib\docfx\tools\docfx.exe rather than the nuget package.
So the issue is that your local docfx.exe has some errors due to some issues. You should reinstall the docfx.exe by choco command choco uninstall docfx; choco install docfx.
Actually, directly use docfx.console nuget package on your project might be easier. From this link.
It already contains the generation step of the documentation by docfx.exe(from C:\Users\xxx\.nuget\packages\docfx.console\2.56.5\tools\docfx.exe) and will execute it automatically rather than run docfx.exe again manually.
I have completely uninstalled docfx using chocolatey (choco uninstall docfx) removed every folder named docfxfrom c:\ProgramData\chocolatey\.chocolatey\ and then reinstalled it (choco install docfx). After that, everything worked fine again. The file c:\ProgramData\chocolatey\lib\docfx\tools\docfx.exe.config contains a lot of msbuild related configuration. Maybe something was messed up there.
In Visual Studio with my Asp.net core project, I have used some nuget packets (like StackExchange.Redis, Serilog etc..). I decided to use Visual studio 2019. Everything was going well, but one day I noticed some projects couldn't update their referenced projects in solution. Because they are (.net standard libraries) taking output codes to obj folder instead bin folder.
I decided to return Visual Studio 2017. Everything working great with VS2017, but this time it giving me a run time error such as could not found referenced assembly public key etc.. like below
I have removed old pockets from all projects in the solution by the package manager nuget manager. I have installed a new version by the nuget manager tool. But project always seemto be using the old version.
FileNotFoundException: Could not load file or assembly 'StackExchange.Redis, Version=2.0.0.0, Culture=neutral, PublicKeyToken=c219ff1ca8c2ce46'. The system cannot find the file specified.
For example, if I install a nuget packet version 2.0.0.0 and I want to remove it all from project and I want to install a new version by an upgrade or downgrade. What should I do? How can I change it?
Update: I have uninstalled 2 packages from nuget and from windows, still project seen this assemblies!
Severity Code Description Project File Line Suppression State
Error CS0433 The type 'ConnectionMultiplexer' exists in both
'StackExchange.Redis.StrongName, Version=1.2.6.0, Culture=neutral,
PublicKeyToken=c219ff1ca8c2ce46' and 'StackExchange.Redis,
Version=2.0.0.0, Culture=neutral,
PublicKeyToken=c219ff1ca8c2ce46' Tursys.Pool.Storage.Api D:\projects\tursys\PoolStorage\src\Tursys.Pool.Storage.Api\Startup.cs 76 Active
Both of them not exist
You can try it:
Install-Package "YourProjectName" -Version 6.2.0
Answering my own question, for anyone:
VS-2019 corrected it's output folder as bin folder with a new bug-fix! but it was not related with the nuget package removement problem
How to remove a package from a project:
In Visual Studio i want to go to file with F12 key. And with the open target folder command i see the local folder of the removed package as
C:\Users\HAMIT\AppData\Local\Temp\MetadataAsSource\821e7bd605414042826501fe0b5cdc21\32ae5450ea724e84b62f983bdb6bb879
I have deleted this temp files but by the rebuild process VS restored them again. This some bored me and i found a new manner. There is always a technic to removing a package from the VisualStudio with the -force argument like below in PM Console
Uninstall-Package -ProjectName "YourProjectName" -RemoveDependencies -Force
When you put this command it will asking you the PackageId will be removed. Write your package name and it is ok!
If you dont know your package name exactly then you can get a list according your project like below:
Get-Package -ProjectName "YourProjectName"
But uninstalling to StackExchange.Redis.StrongName still is enigma!!!
UPDATE: I found a solution for this too! Change Aspnetcore framework 2.2 to 3.0 under Visual Studio 2019. Now seem to right dlls and Everything corrected.
Recently, I converted an Azure Function that used a C# script (*.csx) to a pre-complied class library using the Visual Studio Studio Tools for Azure Functions. It builds successfully in Visual Studio 2017 (as well as running and debugging too).
I'd like to build this AF library via our CI process. However, when I run the command dotnet build locally it fails with the following error:
C:\Users\ray\.nuget\packages\microsoft.net.sdk.functions\1.0.2\build\netstandard1.0\Microsoft.NET.Sdk.Functions.Build.targets(31,5): error : Could not load file or assembly 'Microsoft.Azure.WebJobs.Host, Version=2.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. The system cannot find the file specified.
The same error also occurs in our CI build.
Not sure why this error is occurring and how to resolve it. Is it the version of the dotnet CLI (I'm using v1.1)? Is it something else?
UPDATE 2018-01-08
According to a new answer by #theGRS https://stackoverflow.com/a/48156446/621827 this has been resolved.
Previous Answer
Here's what I've found.
dotnet msbuild uses the Microsoft.NET.Sdk.Functions .NETStandard 1.5 library which if you look at the dependencies on NuGet it doesn't use Microsoft.Azure.WebJobs
But if you use the Visual Studio 2017 msbuild it will use the .NETFramework 4.6 version of the library which includes Microsoft.Azure.WebJobs.
My suggestion is to use MSBuild for now.
I was having the same issue as well when running dotnet build, but no longer have this issue after updating Microsoft.NET.Sdk.Functions from 1.0.2 to 1.0.7.
Update to the latest version of this package in your Nuget package manaager and you should be able to run dotnet build again.
An update occurred last night and now I find myself unable to do a ctrl + '.' for code suggestions in VS 2015. An error message comes up saying the following:
Could not load file or assembly 'Microsoft.CodeAnalysis, version= 1.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
I can still build and develop but this will be really annoying without this feature. I admit it, I am getting soft!
Anyone have a suggestion for fixing this bug?
As pointed out by #CaptainAmerica the solution is to update the CodeDom assembly from NuGet. One should point out how to do this in Visual Studio.
I found the solution here:
https://www.nuget.org/packages/Microsoft.CodeDom.Providers.DotNetCompilerPlatform/
Basically, in the Visual Studio menu select:
Tools-> Nuget Package Manager -> Package Manager Console
In the console that appears at the bottom of Visual Studio run this command:
Install-Package Microsoft.CodeDom.Providers.DotNetCompilerPlatform
If any of the options doesn't work, here is the detailed guide to handle this scenario....
First of all version is important. Notice the version mentioned in the error...
Could not load file or assembly 'Microsoft.CodeAnalysis, version= 1.3.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
If you see above error it means that it's not able to find version 1.3.1. Now please create new VS project. No preferences, it can be just simple console application. Now once project template is ready, go to Package Manager and run following command with your specified version...
Install-Package Microsoft.CodeAnalysis -Version 1.3.1
This will install all packages. Let it complete. Once it's done. We don't need this newly created project at all. You can delete it completely. Seriously! you can delete it. We did this because we wanted that package installed at global nuget level. When you install something, nuget stores it at global level of your machine as well. Path will be something like this...
C:\Users\<<Your Windows User>>\.nuget\packages
You can know your path by following...
%USERPROFILE%\.nuget\packages
Now you will see your required Microsoft.CodeAnalysis.dll there in following folder...
C:\Users\<<Your Windows User>>\.nuget\packages\Microsoft.CodeAnalysis.Common\1.3.1\lib\net45
Please note that above path contains version number (1.3.1). If your version is different, look into that version folder.
Now that you have dll with you, all that you need to do is add that dll to GAC. For that you will need GacUtil.exe
This file get installed along with Visual Studio already. You can search "GacUtil" in C drive. For me it's there on below path...
C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.1 Tools
Now run command prompt as Administrator and navigate current directory to your path containing GacUtil. The run below command to install that dll in GAC.
gacutil
-i C:\Users\<<You Windows User>>\.nuget\packages\Microsoft.CodeAnalysis.Common\1.3.1\lib\net45\Mi
crosoft.CodeAnalysis.dll
Basically providing path to dll we installed globally. It will show message on successful installation.
That's all! Now start your Visual Studio again and you will get this issue fixed.
I had the same problem with Visual Studio 2015 Update 2, to solve the problem globally for all solutions, update to Visual Studio 2015 Update 3. Here is a link: Download from here
I found this page and at the bottom of the page under "Compatibility with ASP.NET" it says that ASP.NET uses the nuget package Microsoft.CodeDom.Providers.DotNetCompilerPlatform to update the Microsoft.CodeAnalysis assemblies. So I updated the DotNetCompilerPlatform package from 1.0.0 to 1.0.3 and it works again! Yeah, life is good again!
To solve this problem for all solutions, I needed to install the assembly Microsoft.CodeAnalysis.dll directly to the GAC – Global Assemblies Cache.
I got the file Microsoft.CodeAnalysis.dll from C:/Users/[user]/.nuget/packages/Microsoft.CodeAnalysis.Common/1.3.2/lib/portable-net45+win8/Microsoft.CodeAnalysis.dll.
To install the assembly to the GAC, I used a PowerShell script from https://github.com/LTruijens/powershell-gac.
Finally, I managed to install the assembly to the GAC with the following command from PowerShell:
Add-GacAssembly [myPath]\Microsoft.CodeAnalysis.dll
I was also facing same issue. My visual studio 2015 version was 2.0. I upgraded it to version 3.
Issue got solved !!!
I was also facing same issue, Try installing Microsoft.CodeAnalysis.CSharp nuget package. And if its not resolved, check version of Microsoft.Net.Compilers in your project, I was having version as 1.0.0 which was causing issue so updated Microsoft.Net.Compilers nuget to v1.3.2.
Found solution here : Github discussion
I have solved the problem this way:
Update Visual studio 2015 to Update 3
from the menu chose View => Notifications => Visual Studio Update 3 and clicked the update button.
Today ! i got the same problem and i resolve it by restarting visual studio 2015 :)
I encountered this issue when trying to build someone's code from github.
I was opening it in VS 2019 but I also have VS 2022. Opening and building in VS 2022 just worked.
I fixed this issue by updating all Nuget Microsoft dependencies to v2.0.0. This was using VS 2017. I was using a preview version.
In my case, the error occurred after turning off Live Unit Testing and running tests manually.Some tests would fail with the above error message.
Going into Test --> Live Unit Testing --> Options and issuing "Delete Persisted Data" resolved the problem.
I fixed similar issue by deleting the .vs folder located inside the solution.
I found the missing assemblies in the NuGet package (After the first one was resolved there were mulitple otheres): https://www.nuget.org/packages/Microsoft.Net.Compilers/1.3.1-rc
Installed them using GacUtil from the Dev console.
Unfortunately the extensive solution with "nuget install/gacutil" here above couldn't work as the exact version of the dependency dll was not available.
The following solved my issue in our complex webform application was to perform within the solution in Visual Studio -> Tools -> Nuget -> console package manager
Update-Package -reinstall
In my case, I was getting this error because my Visual Studio Solution was trying to use TextTransform.exe during a pre-build step in one of the projects, but my local machine didn't have the TextTransform.exe at the path specified by my pre-build step and my first attempt at fixing that was to just copy TextTransform.exe from some other location to where Visual Studio expected it to be. That appears to have caused this problem, because TextTransform.exe has other silent dependencies.
My fix was to change the pre-build steps so instead of looking for the file at
C:\Program Files (x86)\Common Files\microsoft shared\TextTemplating\14.0\TextTransform.exe
it would instead look in the Visual Studio install folder which had a bunch of other files, presumably one of which was a peer dependency of TextTransform.exe
C:\Program Files\Visual Studio\Common7\IDE\TextTransform.exe
That seemed to fix things for me.
I got the same problem, I am using VS2017 and installed Microsoft.EntityFrameworkCore.SqlServer 3.1.8, while in my VS2017 .Net core version is 2.1
So I downgraded my Microsoft.EntityFrameworkCore.SqlServer to 2.1.1 and restarted the solution.
The warning was gone !!
I had similar errors in VS2019 after upgrading project to .Net 5 according to https://learn.microsoft.com/en-us/aspnet/core/migration/31-to-50?view=aspnetcore-5.0&tabs=visual-studio.
error CS0006: Metadata file
'C:\Users\.nuget\packages\microsoft.codeanalysis.analyzers\1.1.0\analyzers\dotnet\cs\Microsoft.CodeAnalysis.Analyzers.dll'
could not be found.
'C:\Users\.nuget\packages\microsoft.codeanalysis.analyzers\1.1.0\analyzers\dotnet\cs\Microsoft.CodeAnalysis.CSharp.Analyzers.dll' could not be founderror CS0006: Metadata file
The fix was to close and reopen VS 2019
Try adding Nuget Package Microsoft.VisualStudio.Web.CodeGeneration.Design to your project
This question is many years old and the answers are all fairly old as well. I only recently ran into a similar-enough issue that I feel sharing my experience here (although potentially not complete) is relevant.
D:\Code\C#\sdkrazortest>dotnet --version
6.0.401
D:\Code\C#\sdkrazortest>dotnet new webapp -o webapp1
The template "ASP.NET Core Web App" was created successfully.
This template contains technologies from parties other than Microsoft, see https://aka.ms/aspnetcore/6.0-third-party-notices for details.
Processing post-creation actions...
Running 'dotnet restore' on D:\Code\C#\sdkrazortest\webapp1\webapp1.csproj...
Determining projects to restore...
Restored D:\Code\C#\sdkrazortest\webapp1\webapp1.csproj (in 102 ms).
Restore succeeded.
D:\Code\C#\sdkrazortest>cd webapp1
D:\Code\C#\sdkrazortest\webapp1>dotnet build
MSBuild version 17.3.1+2badb37d1 for .NET
Determining projects to restore...
All projects are up-to-date for restore.
REWRITECSS : error : [D:\Code\C#\sdkrazortest\webapp1\webapp1.csproj]
An assembly specified in the application dependencies manifest (rzc.deps.json) was not found:
package: 'Microsoft.CodeAnalysis.Common', version: '4.3.0-3.22415.1'
path: 'lib/netcoreapp3.1/Microsoft.CodeAnalysis.dll'
Build FAILED.
REWRITECSS : error : [D:\Code\C#\sdkrazortest\webapp1\webapp1.csproj]
0 Warning(s)
1 Error(s)
Time Elapsed 00:00:10.32
I originally tried loading packages like the top comments here had suggested and realized this issue started happening shortly after install .net core 6. After seeing some SO comments on dotnet-aspnet-codegenerator being version-specific I tried to create my netcore3.1 app using an older version of the dotnet cli via global.json:
D:\Code\C#\sdkrazortest>type global.json
{
"sdk": {
"version": "3.1.403"
}
}
D:\Code\C#\sdkrazortest>dotnet new webapp -o webapp2
Getting ready...
The template "ASP.NET Core Web App" was created successfully.
This template contains technologies from parties other than Microsoft, see https://aka.ms/aspnetcore/3.1-third-party-notices for details.
Processing post-creation actions...
Running 'dotnet restore' on webapp2\webapp2.csproj...
Determining projects to restore...
Restored D:\Code\C#\sdkrazortest\webapp2\webapp2.csproj (in 187 ms).
Restore succeeded.
D:\Code\C#\sdkrazortest>cd webapp2
D:\Code\C#\sdkrazortest\webapp2>dotnet build
Microsoft (R) Build Engine version 16.7.0+7fb82e5b2 for .NET
Copyright (C) Microsoft Corporation. All rights reserved.
Determining projects to restore...
All projects are up-to-date for restore.
webapp2 -> D:\Code\C#\sdkrazortest\webapp2\bin\Debug\netcoreapp3.1\webapp2.dll
webapp2 -> D:\Code\C#\sdkrazortest\webapp2\bin\Debug\netcoreapp3.1\webapp2.Views.dll
Build succeeded.
0 Warning(s)
0 Error(s)
Time Elapsed 00:00:09.91
While this isn't an answer for the new templates not just working for me.. it might help someone potentially get "unstuck" or be the catalyst for someone providing a proper answer.
You need to install NuGet package Microsoft.Net.Compilers.Toolset, but make sure you match the right .NET version. In my case I was targeting netcoreapp3.1 so max version could be 4.0.1.
My root cause was for MassTransit analyzers nagging they cant find Microsoft.CodeAnalysis package, eg. An instance of analyzer MassTransit.Analyzers.AsyncMethodAnalyzer cannot be created.
I think one of the possible reasons for this issue could be the incompatibility of the .NET Framework and certain NuGet package. In my case I have .NET Core 3.1 and Testcontainers 2.4.0. The error does not happen on my local machine but it keeps showing up in my GitHub Actions remotely. It goes away after I downgrade Testcontainers to 2.3.0. Later the NuGet package AspNetCore.HealthChecks.EventStore 6.0.2 causes the same issue but that gets fixed in minutes rather than in hours :)
I want to deploy my C# program, but I'm having issues with running it on another computer.
I copied the entire folder from bin/debug to another computer and tried running the program. I receive the following error message:
Unhandled Exception: System.AggregateException: One or more errors occurred. ---> System.IO.FileNotFoundException: Could not load file or assembly 'System.Threading.Tasks.Dataflow, Version=4.5.24.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system cannot find the file specified.
I thought it might be the issue of the computer not having .NET Framework 4.5.2 and tried downloading the installer from Microsoft but the installer states .NET
Framework 4.5.2 or a later update is already installed on this computer.
This assembly it's not distributed with .Net Framework 4.5 you'll need to add to you project by NuGet, search online in NuGet package manager for Microsoft.Tpl.Dataflow.
I got an same problem and my problem was a missing project reference after an update of an dependent package.
I had to reinstall my nuget packages with the command Update-Package –reinstall in the Package Manager Console.
https://learn.microsoft.com/en-us/nuget/consume-packages/reinstalling-and-updating-packages
After that the project references was newly added.