To enable logging in the Gpsvc.log file, follow these steps.

1. Click Start , click Run , type regedit , and then click OK .

2. Locate and then click the following registry subkey:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion

3. On the Edit menu, point to New , and then click Key .

4. Type Diagnostics , and then press ENTER.

5. Right-click the Diagnostics subkey, point to New , and then click DWORD Value .

6. Type GPSvcDebugLevel , and then press ENTER.

7. Right-click GPSvcDebugLevel , and then click Modify .

8. In the Value data box, type 0x30002 , and then click OK .

9. Exit Registry Editor.

10. At a command prompt, type the following command, and then press ENTER:

gpupdate /force

11. View the Gpsvc.log file in the following folder:

%windir%\debug\usermode