000-891: exofails

Author: PowershellScripts

articles/en/Other/exologinfails.md

@@ -15,15 +15,23 @@ Connect-ExchangeOnline -UserPrincipalName
 InvalidOperation: You cannot call a method on a null-valued expression.
 
 
-Check how many you have
+Check how many 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**.
 
+```powershell
 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