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powershell - WARNING: Unable to find module repositories

I tried to install Docker on activated windows server 2016 standard. I executed “Install-Module -Name DockerMsftProvider -Repository PSGallery -Force” but failed. It suggested that can not find PSGallery. I executed "Get-PSRepository".

The error:

WARNING: Unable to find module repositories.

I googled 3 ways to solve it but none of them worked.

  1. I executed Install-PackageProvider -Name NuGet -MinimumVersion 2.8.5.201 -Verbose -Force successfully.

  2. I installed chocolatey successfully.

  3. I execute "powershell Register-PSRepository -Name "PSGallery" –SourceLocation "https://www.powershellgallery.com/api/v2/" -InstallationPolicy Trusted" but failed. It asked me to use "Register-PSRepository -Default".

I tried "powershell Register-PSRepository -Default -Name "PSGallery" –SourceLocation "https://www.powershellgallery.com/api/v2/" -InstallationPolicy Trusted" but still failed.

How can I solve this problem?

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With the deprecation of TLS 1.0 and 1.1 for PowerShell Gallery as of April 2020, the cmdlets Update-Module and Install-Module became broken. Thus, according to this article, some commands need to be executed to bring them alive again:

[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 
Install-Module PowerShellGet -RequiredVersion 2.2.4 -SkipPublisherCheck

If that still doesn't work, then run the following commands:

[Net.ServicePointManager]::SecurityProtocol = [Net.ServicePointManager]::SecurityProtocol -bor [Net.SecurityProtocolType]::Tls12
Register-PSRepository -Default -Verbose
Set-PSRepository -Name "PSGallery" -InstallationPolicy Trusted

TLS 1.0 and 1.1 were also recently deprecated at NuGet.org: nuget.org deprecated TLS 1.0 and 1.1 But that was also previously announced.


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