When you encounter the “Cannot read configuration file due to insufficient permissions” error in Plesk, it typically indicates that the web server (such as Apache or Nginx) doesn’t have the necessary permissions to access the configuration file for the specified domain. This issue can often be resolved by adjusting file permissions and ownership. Here’s a step-by-step guide to fix this error:
Go to IIS Manager → Application Pool → Plesk Control Panel → right click and select Advanced Settings → Identity → Built-in account switch to LocalSystem then OK then Restart Plesk Control Panel.
If the issue persists, there may be specific configurations in your Plesk environment that require further investigation. In such cases, it’s a good idea to consult with a server administrator or Plesk support for more advanced troubleshooting and resolution.