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Event ID 5081 — IIS Application Pool Recycling

Updated: January 20, 2010

Applies To: Windows Server 2008

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Internet Information Services (IIS) application pools can be periodically recycled to avoid unstable states that can lead to application crashes, hangs, or memory leaks. By default, application pool recycling is overlapped, which means that the worker process that is to be shut down is kept running until after a new worker process is started. After a new worker process starts, new requests are passed to it. The old worker process shuts down after it finishes processing its existing requests, or after a configured time-out, whichever comes first. This way of recycling ensures uninterrupted service to clients. However, if an application in the application pool cannot run more than one instance of itself at a time, overlapping rotation can be disabled.

Event Details

Product: Internet Information Services
ID: 5081
Source: Microsoft-Windows-WAS
Version: 7.0
Symbolic Name: WAS_EVENT_RECYCLE_POOL_RECOVERY
Message: The worker processes serving application pool '%1' are being recycled due to detected problems with the IIS configuration store that may make current cached metadata invalid.

Resolve

This is a normal condition. No further action is required.

Related Management Information

IIS Application Pool Recycling

Internet Information Services (IIS) 7.0

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