Using Tight VNC ,enter the IP address and recovery password to access the server.
Then,
Run > regedit
Click on "HKEY_LOCAL_MACHINE"
Click under "File"-Menu on "Load Hive"
Load the correct file -> C:\Windows\system32\conf ig\SYSTEM
Give it a name (z.B. "RegTemp")
Click "OK" to load the file
Open HKEY_LOCAL_MACHINE\RegTe mp\ControlSet001\Service s\SharedAccess\Parameter s\FirewallPolicy\
Open "PublicProfile" and "StandardProfile" and change the value "EnableFirewall" and "DoNotAllowException s" to 0
Go again to "RegTemp"
Open "File"-Menu and "Unload Hive"
Close the registry and cancel the WinRecovery