The request failed with HTTP status 503: Service Unavailable. "Microsoft.UpdateServices.Administration.CommandException: Failed to start and configure the WSUS service "

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Thought of sharing about a recent issue , I have faced with WSUS Post install config , where the WSUS was failing to connect with the IIS Pool. The post config log (stored under the temp folder) was throwing the below error -


" StartServer encountered errors. Exception=The request failed with HTTP status 503: Service Unavailable."
"Microsoft.UpdateServices.Administration.CommandException: Failed to start and configure the WSUS service "

Solution - after seeing the 2nd line of error (mentioned above) , it looked to me that somehow the WSUS Administration Website (within IIS) was not getting configured during the post installation tasks.

For that I deleted the WSUS Administration Website within IIS -> and then started the Post Install Tasks again. This time the WSUS configuration got completed successfully .

Hope sharing this experience , may help someone somewhere .

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