000-892: exofails

Author: PowershellScripts

articles/en/Other/exologinfails.md

@@ -8,30 +8,70 @@ date: '2025-04-06'
 ---
 
 
-ExchangeOnlineManagement fails to connect
-
+# ExchangeOnlineManagement fails to connect
 
+```powershell
 Connect-ExchangeOnline -UserPrincipalName
 InvalidOperation: You cannot call a method on a null-valued expression.
+```
 
 
-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**.
+🔧 Troubleshooting ExchangeOnlineManagement Connection Issues
+When trying to connect to Exchange Online using the **Connect-ExchangeOnline** cmdlet from the ExchangeOnlineManagement PowerShell module, you might encounter the following error:
 
-```powershell
-get-module -ListAvailable | where {$_.Name -match "Exchange"}
+>> 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**.
+
+```powershell
+Get-Module -ListAvailable | where {$_.Name -match "Exchange"}
+```
+
 Uninstall all your modules. It will allow for a clean start.
 
+```powershell
 Uninstall-Module -Name ExchangeOnlineManagement -force
+```
 
 Make sure all are uninstalled.
 
-get-module -ListAvailable | where {$_.Name -match "Exchange"}
-
+```powershell
+Get-Module -ListAvailable | where {$_.Name -match "Exchange"}
+```
 
 Install the newest version. Check here to see the current version. Optionally, you can also skip the RequiredVersion parameter.
 
+
+```powershell
 Install-Module -Name ExchangeOnlineManagement -RequiredVersion 3.6.0
 
-import-module -Name ExchangeOnlineManagement -MinimumVersion 3.0.0 -force
+Import-Module -Name ExchangeOnlineManagement -MinimumVersion 3.0.0 -Force
+```
+
+
+
+
+
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