Launch worker process (w3wp.exe) automatically as soon as application pool starts

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You can set up an application pool to start automatically but the worker process (w3wp.exe) will actually be launched once a request is made to the web site. However, in some scenarios you may want to have a worker process started automatically whenever an application pool starts. This is useful especially if a worker process launches slow for some reason.

To do that you can set startMode attribute of an application pool to AlwaysRunning in your applicationHost.config. For example:

 <applicationPools>
 <add name="Default App Pool" startMode="AlwaysRunning" />
</applicationPools>

Applies To:

IIS 7.5 or newer.

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