Powershell: PackageManagement\Install-Package fails with "Administrator rights are required to install or update." when run as administrator

[requilium]

Steps to reproduce

PS C:\Users\rfull> $currentPrincipal = New-Object Security.Principal.WindowsPrincipal([Security.Principal.WindowsIdentity]::GetCurrent())
PS C:\Users\rfull> $currentPrincipal.IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)
True
PS C:\Users\rfull> PowerShellGet\Install-Module posh-git -Scope CurrentUser -AllowPrerelease -Force
Install-Package: C:\program files\powershell\7\Modules\PowerShellGet\PSModule.psm1:9709
Line |
9709 |  … talledPackages = PackageManagement\Install-Package @PSBoundParameters
     |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Administrator rights are required to install or update. Log on to the computer with an account that
     | has Administrator rights, and then try again, or install by adding "-Scope CurrentUser" to your
     | command. You can also try running the Windows PowerShell session with elevated rights (Run as
     | Administrator).

Separately but maybe something is busted on my machine:

PS C:\Users\rfull> Set-ExecutionPolicy RemoteSigned -Scope CurrentUser -Confirm

Confirm
Are you sure you want to perform this action?
Performing the operation "Set-ExecutionPolicy" on target "RemoteSigned".
[Y] Yes  [A] Yes to All  [N] No  [L] No to All  [S] Suspend  [?] Help (default is "Y"):
Set-ExecutionPolicy: Could not find file 'C:\Users\rfull\OneDrive\Documents\PowerShell'.

Expected behavior

posh-git is installed and execution policy is updated.

Actual behavior

Install-Package: C:\program files\powershell\7\Modules\PowerShellGet\PSModule.psm1:9709
Line |
9709 |  … talledPackages = PackageManagement\Install-Package @PSBoundParameters
     |                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | Administrator rights are required to install or update. Log on to the computer with an account that
     | has Administrator rights, and then try again, or install by adding "-Scope CurrentUser" to your
     | command. You can also try running the Windows PowerShell session with elevated rights (Run as
     | Administrator).

Environment data

Name                           Value
----                           -----
PSVersion                      7.0.1
PSEdition                      Core
GitCommitId                    7.0.1
OS                             Microsoft Windows 10.0.18363
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

[requilium]

Issue is caused by controlled folder access being enabled.

[ScottHutchinson]

This worked for me. Windows Security settings...Virus & threat protection...Virus & threat protection settings...Manage settings...Manage controlled folder access...Allow an app through Controlled folder access...Add an allowed app...Recently blocked apps...select pwsh.exe (C:\Program Files\PowerShell\7) from the list.

[requilium]

This worked for me. Windows Security settings...Virus & threat protection...Virus & threat protection settings...Manage settings...Manage controlled folder access...Allow an app through Controlled folder access...Add an allowed app...Recently blocked apps...select pwsh.exe (C:\Program Files\PowerShell\7) from the list.

I disabled it temporarily. If I had to take a guess it'd be the profile folder under Documents that's being blocked (if that is indeed created during install).

[shinieki]

I experienced exactly the same issue. By turning off the controlled folder access under Windows Defender, I was able to install the modules as described by other users. Thanks for the info, really helped.