IIS 7 and Above
iis Application Stopped after installing DotNet Hosting(All Versions)
Re: iis Application Stopped after installing DotNet Hosting(All Versi...
Dec 09, 2019 07:03 AM|Jalpa Panchal|LINK
is your application pool is running under a custom user account? if yes then check the provided username and password or reconfigured it.
also, check the event viewer for more information about why the Application Pool is stopping immediately.
To open Event Viewer - press Win+R and type: eventvwr, then press ENTER.
On the left side of Windows Event Viewer click on Windows Logs -> Application.
Now you need to find some ERRORS for source IIS-W3SVC-WP in the middle window.
or you can filter as shown below: