PowerShell to Exchange Online

PowerShell to Exchange Online KB ID 0001814


While attempting to PowerShell to Exchange Online today, I tried to do this by using my usual method, and repeatedly got this error.

New-PSSession : [outlook.office365.com] Connecting to remote server outlook.office365.com failed with the following
error message : Access is denied. For more information, see the about_Remote_Troubleshooting Help topic.
At line:1 char:12
+ $Session = New-PSSession -ConfigurationName Microsoft.Exchange -Conne ...
+            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OpenError: (System.Manageme....RemoteRunspace:RemoteRunspace) [New-PSSession], PSRemotin
    + FullyQualifiedErrorId : AccessDenied,PSSessionOpenFailed

I double checked the username/password was correct, and that the user was a global admin.

PowerShell to Exchange Online: Solution

After some searching it would seem that if the user is using MFA or you need to connect via modern authentication this can happen! Open an administrative PowerShell window, and execute the following commands;

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

Then Press A {Enter}
Install-Module -Name PowerShellGet -Force

If Prompted Press Y and {Enter}

Install-Module -Name ExchangeOnlineManagement -Force
Connect-ExchangeOnline -UserPrincipalName username@domain.com -ShowProgress $true

Log on interactively

PowerShell Connect to Exchange Online

Then continue as normal.

Related Articles, References, Credits, or External Links


Author: PeteLong

Share This Post On

Submit a Comment

Your email address will not be published. Required fields are marked *