How to fix DNX/DNVM in Visual Studio 2015?

Question

Today I installed VS 2015 on Windows 7 x64. Mainly to test new .Net Core features and etc. And for test I created new C# "Console Application (Package)" solution and got this message:

DNX SDK version 'dnx-clr-win-x86.1.0.0-beta5' failed to install. The solution will use DNX SDK version ‘dnx-clr-win-x86.1.0.0-beta5’ for this session.

I can't compile and debug project. Also, when I have opened debug tab in project properties then VS crashed.

DNVM output when I opened solution:

Invoke-Command : The term 'x86' is not recognized as the name of a cmdlet, func
tion, script file, or operable program. Check the spelling of the name, or if a
 path was included, verify that the path is correct and try again.
C:\Program Files\Microsoft DNX\Dnvm\dnvm.ps1:1451 ????:27
+             Invoke-Command <<<<  ([ScriptBlock]::Create("dnvm-$cmd $cmdargs")
)
    + CategoryInfo          : ObjectNotFound: (x86:String) [Invoke-Command], C 
   ommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException,Microsoft.PowerShell.Co 
   mmands.InvokeCommandCommand

Invoke-Command : The term 'x86' is not recognized as the name of a cmdlet, func
tion, script file, or operable program. Check the spelling of the name, or if a
 path was included, verify that the path is correct and try again.
C:\Program Files\Microsoft DNX\Dnvm\dnvm.ps1:1451 ????:27
+             Invoke-Command <<<<  ([ScriptBlock]::Create("dnvm-$cmd $cmdargs")
)
    + CategoryInfo          : ObjectNotFound: (x86:String) [Invoke-Command], C 
   ommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException,Microsoft.PowerShell.Co 
   mmands.InvokeCommandCommand

Invoke-Command : The term 'x86' is not recognized as the name of a cmdlet, func
tion, script file, or operable program. Check the spelling of the name, or if a
 path was included, verify that the path is correct and try again.
C:\Program Files\Microsoft DNX\Dnvm\dnvm.ps1:1451 ????:27
+             Invoke-Command <<<<  ([ScriptBlock]::Create("dnvm-$cmd $cmdargs")
)
    + CategoryInfo          : ObjectNotFound: (x86:String) [Invoke-Command], C 
   ommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException,Microsoft.PowerShell.Co 
   mmands.InvokeCommandCommand

Any ideas how to fix it?

Also, I have previously installed VS 2015 Preview and DNX/DNVM separately. But I think, I completely removed it before VS 2015 installation. Could this somehow affects current VS installation?

Solution 1

This is a known issue.

ASP.NET 5: On Windows 7 SP1, DNX SDK cannot be installed without Powershell 3.0.

Symptoms

When you create an ASP.NET 5 project, you receive the following error message:

DNX SDK version 'dnx-clr-win-x86.1.0.0-beta5' failed to install. The solution will use DNX SDK version 'dnx-clr-win-x86-1.0.0-beta5' for this session

Workaround

To work around this issue, install Windows Powershell 3.0 (or higher) and try to create the project again. To see your current PS version, run $PsVersionTable command (details).

Links:

• How to Install Windows PowerShell 4.0.
• Install PowerShell 3.0 on Windows 7.

Solution 2

Install the latest version by opening a console and running:

dnvm upgrade

If you reopen VS you should be able to compile.

If this doesn't work, try deleting the C:\Users\username\.dnx folder. Reopen VS and it will recreate the .dnx folder in the same location with only 2 scripts: bin\dnvm.cmd and bin\dnvm.ps1 Note: This would delete all already installed runtimes.

Rerun dnvm upgrade and check under the project properties if the Solution DNX SDK Version you have matches an installed one.

Solution 3

I am also having this problem. It appears to be related to an issue where the dnvm.ps1 script does not quote the install path. The command dnvm install "C:\Program Files (x86)\Microsoft Web Tools\DNX\dnx-clr-win-x86.1.0.0-beta5.nupkg" from Visual Studio gets recalled as dnvm-install C:\Program Files (x86)\Microsoft Web Tools\DNX\dnx-clr-win-x86.1.0.0-beta5.nupkg, which breaks as the path should be quoted. More information is available on the pull request I opened at:

https://github.com/aspnet/dnvm/pull/357

As a workaround, the solution for me was to change the following in "C:\Program Files\Microsoft DNX\Dnvm\dnvm.ps1". This loops through the arguments, ensuring that any containing whitespace or parenthesis are quoted.

Replace the following line:

$cmdargs = @($args[1..($args.Length-1)])

with:

# Combine arguments, ensuring any containing whitespace or parenthesis are correctly quoted 
ForEach ($arg In $args[1..($args.Length-1)]) {
    if ($arg -match "[\s\(\)]") {
        $cmdargs += """$arg"""
    } else {
        $cmdargs += $arg
    }
    $cmdargs += " "
}

If you are still having issues following making this change, delete C:\Users\username\.dnx and reopen Visual Studio to let Visual Studio recreate the folder.

Solution 4

I could fix it by this way: In Developer Command prompt for 2015 enter this command

dnvm install 1.0.0-beta5

sure this way will can fix your issue.!

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