How to re-use authentication with PnP.Powershell

[tbresson]

Hello.

I'm trying to make a Powershell script which gathers all of our Microsoft Groups and then go through each of them searching for specific file- & folder content.

With SharePointPnPPowerShellOnline I could pass in a Credential object and re-use that to first connect to the tenant and then later to each site using the -Credential parameter.

With PnP.Powershell (the new crossplatform version) I can't figure out how to re-use my authentication.

First I connect to the tenant and then I have to connect again to each site (Microsoft Group). By doing this I get more than one credential request.

I use the recommended way of connecting: Connect-PnPOnline -Url $Url -Interactive

Get the sites with: Get-PnPTenantSite

And then for each site I'm trying: Connect-PnPOnline -Url $Site -Interactive

Is there someway I can re-use my authentication ?

NB! I'm using MFA on my account.

[#2 · Accepted solution]

They way I found to solve it was this - if anyone is looking for the same thing:
Use the -ReturnConnection parameter to return the current connection to a variable.

$Connection = Connect-PnPOnline -Url $Url -Interactive -ReturnConnection

Later when I connect to the different sites I use the ClientId which is returned to the Connection object like this:

Connect-PnPOnline -Url $Site -Interactive -ClientId $Connection.ClientId

I still get authentication popups for sites that won't allow me to connect though but I guess this is fine.