How do you connect to your SharePoint Office365 tenant with the PowerShell if you are locked behind a proxy? This hint will probably work for all kind of PowerShell scripts, not only for Office PnP. I tried this with the Microsoft SharePoint Online extensions as well and it worked.
So my problem was, the company I was working for, had a proxy which could not be bypassed. The proxy settings have been set by a GPO and the network settings where fine so far. However the proxy used user authentication to access the internet. Now if I want to use the SharePoint Online tools, I must authenticate my PowerShell session at the proxy so the tools can access the internet too.
The trick to get your PowerShell connected is quite simple. You only need to enter the following line:
[System.Net.WebRequest]::DefaultWebProxy.Credentials = [System.Net.CredentialCache]::DefaultCredentials
Now you should be able to connect to Office365 SharePoint without problems. If you don't want to enter this line every time you open a new PowerShell, you could add it to your PowerShell profile.
then add this to the profile file:
#Set user default credentials for any webrequest "Setting the users default credentials for WebRequests..." | Write-Host -ForegroundColor White [System.Net.WebRequest]::DefaultWebProxy.Credentials = [System.Net.CredentialCache]::DefaultCredentials