IIS ApplicationInitialization doesn't call initializationPage on one of the servers

Question

I setup applicationinitialization for our web app by following up https://docs.microsoft.com/en-us/iis/get-started/whats-new-in-iis-8/iis-80-application-initialization

the below is my changes in web.config

<applicationInitialization   doAppInitAfterRestart="true"   skipManagedModules="true"   remapManagedRequestsTo="init.html">
  <add initializationPage="/warmup/init" hostName="phoenix"/>
</applicationInitialization>

It's working find on my local (win10) and 2 other environment for dev and staging (both win2012) but not working on QA environment (win2012).

on QA environment I see init.html on screen when app poll recycles, but initializationPage is not called at all.

startMode of app poll is AlwayRunning

Preload Enabled is true on webapp,

Idle Time-out is 0 on app pool

Regular Time Interval (minutes) is 0 on app pool

I checked windows event logs no related logs are there.

Any other settings to check?

Answer 1

Do you have the Application Initialization feature installed? The options apparently exist even if the feature is not installed on the Windows system. I was having the same issue and had to go to Windows Features and select "Application Initialization" from the IIS feature options to get it working.