Plesk for Windows is not accessible with the 503 error: The Module DLL C:\Windows\Microsoft.NET\Framework64\HittpResetModule.dll failed to load

Symptoms

• Plesk for Windows is not accessible with the following error in the browser

  

• PleskControlPanel IIS application pool is in the stopped state.

• If trying to start the pool and accessing Plesk in a browser, the following error appears in the Event Viewer > Windows Logs > Application:

  CONFIG_TEXT: The Module DLL C:\Windows\Microsoft.NET\Framework64\HittpResetModule.dll failed to load. The data is the error.

Cause

Malicious software. Additional information

Resolution

1. Connect to the server via RDP.

2. Open IIS > server name > Modules and remove both %windir%\Micrisift.Net\Framework\HttpResetModule.dll and %windir%\Micrisift.Net\Framework64\HttpResetModule.dll.

3. Open IIS > server name > Configuration Editor.

4. Switch to the section system.webServer/globalModules.

5. Click on the Edit Configuration button.

6. Remove modules with the same name from this page and save changes.

7. Restart IIS:

   C:\> iisreset

8. Check the server for malicious software using any antivirus program. Consider migrating to a new Plesk server