"The system cannot find the file specified." after installing credprovider

[jamie-tillman]

• Running Windows 10, all updates.
• Visual Studio Build Tools (latest) installed, but not Visual Studio
• PackageManagement version: 1.4.8.1
• PowershellGet version: 2.2.5

I have used the iex installation method as a non-admin and an admin:

iex "& { $(irm https://aka.ms/install-artifacts-credprovider.ps1) } -AddNetfx"

Then I run the following:

$repoUrl = "https://pkgs.dev.azure.com/mycompany/_packaging/Powershell-Modules/nuget/v2";
Register-PSRepository -Name "PowershellDevOps" -SourceLocation $repoUrl -PublishLocation $repoUrl -InstallationPolicy Trusted

and I get this response:

Start-Process : This command cannot be run due to the error: The system cannot find the file specified.
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:9354 char:5
+     Start-Process $filename -ArgumentList "$arguments -V minimal" `
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Start-Process], InvalidOperationException
    + FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand

Start-Process : This command cannot be run due to the error: The system cannot find the file specified.
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:9361 char:5
+     Start-Process $filename -ArgumentList "$argumentsNoRetry -V verbo ...
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Start-Process], InvalidOperationException
    + FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand

Exception calling "Match" with "2" argument(s): "Value cannot be null.
Parameter name: input"
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:9370 char:5
+     $username = [System.Text.RegularExpressions.Regex]::Match($conten ...
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : ArgumentNullException

Exception calling "Match" with "2" argument(s): "Value cannot be null.
Parameter name: input"
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:9371 char:5
+     $password = [System.Text.RegularExpressions.Regex]::Match($conten ...
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : ArgumentNullException

Start-Process : This command cannot be run due to the error: The system cannot find the file specified.
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:9354 char:5
+     Start-Process $filename -ArgumentList "$arguments -V minimal" `
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Start-Process], InvalidOperationException
    + FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand

Start-Process : This command cannot be run due to the error: The system cannot find the file specified.
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:9361 char:5
+     Start-Process $filename -ArgumentList "$argumentsNoRetry -V verbo ...
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Start-Process], InvalidOperationException
    + FullyQualifiedErrorId : InvalidOperationException,Microsoft.PowerShell.Commands.StartProcessCommand

Exception calling "Match" with "2" argument(s): "Value cannot be null.
Parameter name: input"
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:9370 char:5
+     $username = [System.Text.RegularExpressions.Regex]::Match($conten ...
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : ArgumentNullException

Exception calling "Match" with "2" argument(s): "Value cannot be null.
Parameter name: input"
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:9371 char:5
+     $password = [System.Text.RegularExpressions.Regex]::Match($conten ...
+     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : ArgumentNullException

Register-PSRepository : The specified repository 'PowershellDevOps' is unauthorized and cannot be registered. Try
running with -Credential.
At line:1 char:1
+ Register-PSRepository -Name "PowershellDevOps" -SourceLocation $repoU ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [Write-Error], WriteErrorException
    + FullyQualifiedErrorId : RepositoryCannotBeRegistered,Register-PSRepository

After poking at the PSModule.psm file a bit, it seems to be failing when it is trying to start up the credprovider. Any ideas on how to diagnose or correct would be appreciated.

[jamie-tillman]

dotnet SDK was not properly installed. After re-install I was prompted for the device flow.