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Event ID: 5203 Source: WAS

A process serving application pool 'MSExchangePowerShellAppPool' reported a failure trying to read configuration during startup. The process id was '21744'. Please check the Application Event Log for further event messages logged by the worker process on the specific error. The data field contains the error number.
In my case, this occurs when a batching routine is triggered by the AuctionMaster software.
From a support forum: "This error message shows that  DefaultAppPool has crashed due to some failures in worker process. If you have several web sites in the same pool then try to assign a dedicated pool to each site which helps to isolate the application and to trace this problematic web site easily."
EV100559 (Debug Diagnostic Tool v1.2) can be used to troubleshoot various IIS-related issues.
According to CTX131137, this event may be recorded when the Extensible Transformation Engine (XTE) Service connection fails on cloned server and opening the Web Interface gives the “503 Service Unavailable” error. The article provides 3 workarounds.

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