ExchangeOnlineManagement fails to connect

🔧 Troubleshooting ExchangeOnlineManagement Connection Issues

Connect-ExchangeOnline -UserPrincipalName
InvalidOperation: You cannot call a method on a null-valued expression.

When trying to connect to Exchange Online using the Connect-ExchangeOnline cmdlet from the ExchangeOnlineManagement PowerShell module, you might encounter the following error:

InvalidOperation: You cannot call a method on a null-valued expression.

This error typically indicates that something went wrong during the initialization of the module or authentication process.

Check how many ExchangeOnlineManagement modules you have. If it’s more than one, it is likely to cause an issue. Unless you have a very good reason to keep multiple versions, it’s best to have only one.

Get-Module -ListAvailable | where {$_.Name -match "Exchange"}

Uninstall all your modules. It will allow for a clean start.

Uninstall-Module -Name ExchangeOnlineManagement -force

Make sure all are uninstalled.

Get-Module -ListAvailable | where {$_.Name -match "Exchange"}

Install the newest version. Check here to see the current version. Optionally, you can also skip the RequiredVersion parameter.

Install-Module -Name ExchangeOnlineManagement -RequiredVersion 3.6.0

Import-Module -Name ExchangeOnlineManagement -MinimumVersion 3.0.0 -Force

See Also

Connect to Exchange Online Powershell

ExchangeOnlineManagement in Powershell Gallery