Get-AzResourceGroup returns "No tenant found in the context" - azure-powershell

Question

I've just opened PowerShell and ran:
> Connect-AzAccount
> Get-AzResourceGroup
And received this error.
Get-AzResourceGroup: No tenant found in the context. Please ensure that the credentials you provided are authorized to access an Azure subscription, then run Connect-AzAccount to login.
> Get-AzSubscription
WARNING: Unable to acquire token for tenant 'Common'
Get-AzSubscription: Could not authenticate with tenant . Please ensure that your account has access to this tenant and log in with Connect-AzAccount
I've not used Azure PowerShell for a year. I copy pasted the URL given to me by the connect command into the same browser as I have my Azure subscription open in and logged in as per usual. I'm the sole admin and user on my Azure sub. Here's my version.
> $PSVersionTable.PSVersion
Major Minor Patch PreReleaseLabel BuildLabel
----- ----- ----- --------------- ----------
7 1 4
I tried to reinstall the Azure PowerShell module but got further strangeness.
> Install-Module -Name Az -Scope CurrentUser -Repository PSGallery -Force
Install-Package: C:\program files\powershell\7\Modules\PowerShellGet\PSModule.psm1:9711
Line |
9711 | … 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).
Obviously, I'm running as admin and I have specified the CurrentUser scope. I will give up and try the Azure CLI.
Raised an issue on GitHub: https://github.com/Azure/azure-powershell/issues/15842

Answer 1

I think installing the Azure CLI resolved it.
I've literally only done these things since posting.
Installed the Google Cloud CLI and GCP SDK.
Spend 10 hours reading the GCP documentation on a bunch of stuff because I was interested in seeing how green their grass really is.
Tried and failed to install a different Az PS package as request by someone on the Github issue.
Tried and successfully installed the Microsoft.Graph PS package, again as a test requested by my Github friend.
Installed the Azure CLI via MSI.
Read the comment from #BhargaviAnnadevara and tried it and saw that it all worked.