F-Secure Email and Server Security manual scan causes system to hang  Symptoms 
 After initialing a manual scan, the server/system experiences noticeable degradation in performance causing the server/system to hang. 
 Diagnosis 
 Scanning large archives may cause the CPU usage to increase by 50% - 100%. 
 Solution 
 To overcome this issue, set an archive nesting limit for manual scanning: 
 -  Start Windows Registry Editor (regedit.exe). 
-  Set the following registry on the server: -  If you have a 32-bit system: [HKEY_LOCAL_MACHINE\SOFTWARE\Data Fellows\F-Secure\GKH2] "MaxArchiveNesting"=dword:00000001 (1)
 
-  If you have a 64-bit system: [HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Data Fellows\F-Secure\GKH2]"MaxArchiveNesting"=dword:00000001 (1)
 
 
-  Restart the FSGKHS service for the change to take effect.