Start-WebAppPool error when install Sitecore XC 9.1

When I tried to install Sitecore XC 9.1, there was an error thrown in the powershell console: 

ERROR + Start-WebAppPool -Name [appPool name] ERROR start-webitem : The service cannot accept control messages at this time.

According to
Looks like there is something else slowing the application pool to fully stop. So before it is fully stopped, it can not be started. I have run into this situation before when I was using IIS Manager. Stopped an application pool, in the UI it indicated it is stopped, however I could not start it until wait for a while.

To get rid of this issue, we can add extra "wait" time for the application pool to get fully stopped.

Go to [resourcefiles folder]\SIF.Sitecore.Commerce.2.0.19\Modules\SitecoreUtilityTasks\SitecoreUtilityTasks.psm1, line 64 add following:

Similar edits should be implemented in C:\Program Files\WindowsPowerShell\Modules\SitecoreInstallFramework\2.1.0\Public\Tasks\Invoke-ManageAppPoolTask.ps1 after line 48

After that, run the import command to reload the SIF module, so our changes can take effect.

import-module sitecoreinstallframework -RequiredVersion 2.1.0 -Force


Peng Song

I Started using Sitecore from its version 5.5. Based in China or Australia, I do enjoy moving ;) After many years working as a Web Developer, I got used to learn new skills and always willing to try something new in my spare time. Big soccer fans, maybe someday you will meet me at the pitch of Botanic Garden/Domain in the weekend~

To enable comments sign up for a Disqus account and enter your Disqus shortname in the Articulate node settings.