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Website in Plesk shows error 503; its application pool randomly stops within a specified time period: automatically disabled due to a series of failures - Support Cases from Plesk Knowledge Base
HTTP response 503 Service Unavailable from IIS: one common generic cause - Microsoft Community Hub
How To Install IIS, Create Application Pool And Using PowerShell Script How To Start And Stop IIS App Pool
Scott Forsyth's Blog - Why is the IIS default app pool recycle set to 1740 minutes?
c# - HTTP Error 503. The service is unavailable. App pool stops on accessing website - Stack Overflow
SOLVED: WSUSPool in IIS Stops Repeatedly | Up & Running Technologies, Tech How To's
Website in Plesk shows error 503; its application pool randomly stops within a specified time period: automatically disabled due to a series of failures - Support Cases from Plesk Knowledge Base
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503 Service Unavailable in IIS 7 - watch those Application Pools - Rick Strahl's Web Log
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