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Home > Success Center > Patch Manager > Patch Manager - Knowledgebase Articles > HTTP 503 error when accessing WSUS in Patch Manager

HTTP 503 error when accessing WSUS in Patch Manager

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When you click the WSUS server in Patch Manager, the following error displays: 

HTTP 503  


Patch Manager 2.1


  1. Make sure all WSUS (EminentWare) services are started and running.
  2. Log in to the server hosting WSUS.
  3. Reset the Microsoft® IIS web services.
    Open a command prompt as an administrator and execute:
  4. Open the Patch Manager Administrator Console.
  5. Refresh the WSUS server to regain access. 
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