HTTP Error 503


How to resolve IIS “HTTP Error 503. The service is unavailable.” error in hosting servers

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In our role as Web support engineers, we resolve and prevent service errors in both Linux and Windows servers. Recently we were contacted by a Windows server owner who was getting “HTTP Error 503. The service is unavailable” in his websites.

Upon examining the EventViewer logs, we could see the error “A process serving application pool ‘plesk(default)(4.0)(pool)’ suffered a fatal communication error with the Windows Process Activation Service”. (more…)

HTTP Error 503 The service is unavailable – How to resolve this website error in Odin Plesk Windows servers

HTTP Error 503 The service is unavailable – How to resolve this website error in Odin Plesk Windows servers

In Odin Plesk Windows servers, customers sometimes report their sites being unavailable with the error showing : “HTTP Error 503. The service is unavailable.” This usually happens after a major change like a migration, site restore, etc., and leads to all sites of the user being unavailable. (more…)