Event ID 5080 — IIS Application Pool Recycling

Applies To: Windows Server 2008

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: 5080
Source: Microsoft-Windows-WAS
Version: 7.0
Message: The worker processes serving application pool '%1' are being recycled due to 1 or more configuration changes in the application pool properties which necessitate a restart of the processes.


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

IIS Application Pool Recycling

Internet Information Services (IIS) 7.0