- Application pools crashes. Errors are logged to Event Viewer > Windows Logs > Application :
The worker process for application pool 'DefaultAppPool' encountered an error 'Cannot read configuration file due to insufficient permissions
' trying to read configuration data from file '?C:inetpubtempapppoolsDefaultAppPoolDefaultAppPool.config', line number '0'. The data field contains the error code.
Process Monitor with filter "Process name: w3wp.exe" shows the following:
Website shows an error:
503 Service Unavailable
Insufficient permissions for the application user on the application pool configuration file. In the symptoms above, the user is "DefaultAppPool" and the file is
Note: This article may require additional administrative knowledge to apply. If any help required, contact server’s administrator or hosting support.
For one website:
In case multiple application pools are stopped