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Last update: . Author: Cyril LEROY .

SharePoint Server Test Connection Fails for PowerShell

When configuring PowerShell checks on a SharePoint Server in GSX Monitor, you get a failure error message when testing the connection.

This articles explains how to fix the issue and why this is happening.

GSX Monitor 10 and above | SharePoint 2010 | SharePoint 2013


  • Failure. PowerShell test command error: The farm is unavailable.
  • Failure. Object reference not set to an instance of an object. 

How to Solve the Issue

To fix the issue, edit the server configuration and change the authentication from Kerberos to CredSSP from the connectivity tab:

Microsoft Related article:

  • For a detailed explanation on the roles CredSSP and Kerberos are playing in this issue, take a look at this MSDN blog post.

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