WARNING: Unable to find module repositories

Question

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?

Solution 1

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: But that was also previously announced.

Solution 2

Simply running Register-PSRepository -Default (without any additional parameters) worked for me. After that, the Gallery was successfully registered:

PS C:\Windows\system32> Get-PSRepository

Name                      InstallationPolicy   SourceLocation
----                      ------------------   --------------
PSGallery                 Untrusted            https://www.powershellgallery.com/api/v2/

Solution 3

My problem was the missing Proxy config

best solution from comments: https://www.zerrouki.com/working-behind-a-proxy/
thanks to @Vadzim

---

In PowerShell open Profile

PS> notepad $PROFILE

this opens Notepad with your profile setting, will be created of not exists.
then add:

[system.net.webrequest]::defaultwebproxy = new-object system.net.webproxy('http://webproxy.yourCompany.com:PORT')
[system.net.webrequest]::defaultwebproxy.credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials
[system.net.webrequest]::defaultwebproxy.BypassProxyOnLocal = $true

somehow my local proxy is set but doesn't work. same problem later with Docker, =>

> PS> [Environment]::SetEnvironmentVariable("HTTP_PROXY", http://username:password@proxy:port/", [EnvironmentVariableTarget]::Machine)

then restart docker service

Solution 4

I got a similar message. I ran Register-PSRepository -default and it registered ok. Then I ran Set-PSRepository -Name PSGallery -InstallationPolicy Trusted. I didn't combine the commands, but it worked.

I spent over an hour trying to pass credentials to the proxy the same way I do for Exchange Online, but no love. I disconnected and used our guest WiFi instead.

View more solutions

Comments

[Vadzim]

Take a look also at zerrouki.com/working-behind-a-proxy and spaghettidba.com/2017/12/19/…

[Vadzim]

It would be beneficial to your answer to quote the better parts then. )

[KERR]

I've seen this answer mentioned a lot but I'm having the error on my home PC with no proxy...

[Janis Veinbergs]

For PowerShell Core v7, this is what works: [System.Net.Http.HttpClient]::DefaultProxy = New-Object System.Net.WebProxy('http://127.0.0.1:8888', $true, @(";*.bypassdomain.com"))

[Sauron]

No repository with the name 'PSGallery' was found