Symptoms
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On a Plesk for Windows server, the Plesk menu Tools & Settings > FTP Settings is not accessible:
500 PleskUtilException
winfwmng failed: The type initializer for 'psa.ip.device.InternetFirewall' threw an exception. Creating an instance of the COM component with CLSID {304CE942-6E39-40D8-943A-B913C40C9CD4} from the IClassFactory failed due to the following error: 800706d9 There are no more endpoints available from the endpoint mapper. (Exception from HRESULT: 0x800706D9). (Error code 1) -
The same error can be found on attempt to open the menu Tools & Settings > Firewall.
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In the Windows MMC snap-in Windows Firewall with Advanced Security, the following error is displayed instead of the firewall rules:
There was an error opening the Windows Firewall with Advanced Security snap-in
The Windows Firewall with Advanced Security snap-in failed to load. Restart the Windows firewall service on the computer that you are managing. Error code: 0x6D9.
Cause
Windows Server OS Firewall is not accessible via COM.
Resolution
Contact Microsoft Support for fixing issues with the Windows Server OS firewall.