1. Click Start, Run, type explorer, and click OK.
2. Navigate to: C:\Program Files\McAfee\Common Framework\
3. Make sure that SecureFrameworkFactory.dll exists in this folder. If not, copy it from the same location on a working system.
    
   NOTE: If you do not have another system, see Solution 3.
    
4. Click Start, Run, type CMD, and click OK.
5. In the command window, type the following command and press Enter:
    
   Regsvr32.exe "C:\Program Files\McAfee\Common Framework\SecureFrameworkFactory.dll"
    
6. Click OK when you receive the confirmation that the file was successfully registered.
7. Repeat the previous steps for SecureFrameworkFactory3.dll.

1.  Stop the McAfee Agent Service (5.x) or McAfee Framework Service (4.x): 
   1. Click Start, Run, type services.msc, and then click OK.
   2. Right-click the McAfee Agent Service (5.x) and select Stop.
   3. Close the Services window.
       
2. Register all DLL files in the Common Framework folder:
   1. Click Start, Run, type CMD, and click OK.
   2. To navigate to the Common Framework folder, type the following command and press Enter:
      
      cd C:\Program Files\McAfee\Common Framework\
      
      NOTE: The above command uses the default installation directory. If you specified a different directory during installation, use that location instead. 
       
   3. To re-register the files, type the following command and press Enter:
      
      for %m in (*.dll) do regsvr32 /s %m 
       
   4. Wait for the DLL registrations to complete.
       
3. Register all DLL files in %SystemRoot%\System32:
   Some of the shared McAfee DLL files are located in this folder.
    
   1. To navigate to the System32 folder, type the following command and press Enter:
      
      cd  %SystemRoot%\System32 
   2. To register all files in the System32 folder, type the following command and press Enter:
      
      for %m in (*.dll) do regsvr32 /s %m 
   3. Wait for the DLL registrations to take place, and then close the command prompt window.
       
4. Restart the McAfee Agent Service (5.x)
   1. Click Start, Run, type services.msc, and click OK.
   2. Right-click the McAfee Agent Service (5.x) and select Start.
   3. Close the Services window.
   4. Initiate an AutoUpdate.

If either of the previous solutions fail to resolve this issue, or if the Common Framework folder is either missing or empty, remove VirusScan Enterprise and McAfee Agent and reinstall. A missing or empty Common Framework folder indicates a failed upgrade.