How to fix the PartsMgr registration error
Warning: Proceed with caution. You can cause serious issues with your system if you modify the Windows Registry incorrectly. It is highly recommended that you back up your registry before you start.
- Back up your registry:
- Press the Windows Key + R to open the Run dialog.
- Type regedit and click OK.
- In the Registry Editor, go to File > Export....
- Save the backup file to a location you can easily find, such as your Desktop.
- Navigate to the correct registry key:
- In the Registry Editor, use the left-hand panel to navigate to this path: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}.
- Be careful to choose the correct key, as there may be other entries that look similar.
- Correct the value:
- In the right-hand panel, find and double-click the entry named UpperFilters.
- A dialog box will appear to edit the value.
- Change the value data from whatever it is currently (e.g., partmgr in all lowercase, or 0) to exactly PartMgr (with a capital 'P' and 'M').
- Click OK to save the change.
- Restart and re-activate FSX:
- Close the Registry Editor and restart your computer.
- Launch FSX again. The registration or activation wizard should now appear, allowing you to enter your product key.
If the registry fix doesn't work
If correcting the registry entry does not solve the problem, try these additional steps:
- Run as Administrator: Right-click the FSX executable file and choose "Run as administrator" to ensure it has proper permissions.
- Install with compatibility mode: Some users have reported success by running the FSX installer in compatibility mode for an older version of Windows.
- Reinstall the Acceleration Pack: The error can be related to the Acceleration expansion pack specifically. Uninstalling and then reinstalling the Acceleration Pack may resolve the issue.
- Use the Microsoft activation reset tool: A legacy tool from Microsoft can sometimes fix activation issues. AVSIM, a major flight sim website, has resources and forums discussing its us