HTTP Error 503. The service is unavailable [IIS 8]

Merajuddin Ansari

7y1.9k.NET

I get this error every time after 1 week or 2 weeks, starting and stopping pool also does not solve the problem. when I restart the server then the problem gets resolved.

3 Replies

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Thuyavan Ganesan7y ago
Hi,

If you are restarting the server to fix this HTTP Error 503. then its a problem with your appliacation pool running out of RAM. PLease try to focus on the native memory leak in IIS

Please have al look at the link below..it can shed some lights.

Please let me know .

Dont forget to mark as an answer if it helps!. Thanks

https://serverfault.com/questions/544837/http-error-503-the-service-is-unavailable/549747#549747
Jignesh Kumar7y ago
Hi Merajuddin,

I think problem with this property of Application pool 'Rapid Fail Protection'. Could you please check below link.

https://stackoverflow.com/questions/40555924/iis-8-http-error-503-the-service-is-unavailable

For more details :

https://support.plesk.com/hc/en-us/articles/213917405-Application-pool-stops-randomly-within-in-a-specified-time-period-automatically-disabled-due-to-a-series-of-failures

https://docs.microsoft.com/en-us/iis/configuration/system.applicationhost/applicationpools/add/failure
Thuyavan Ganesan7y ago
Hi,

If you are restarting the server to fix this HTTP Error 503. then its a problem with your appliacation pool running out of RAM. PLease try to focus on the native memory leak in IIS

Please have al look at the link below..it can shed some lights.

Please let me know .

Dont forget to mark as an answer if it helps!. Thanks