For more information about how to enable Windows Installer Logging, click the following article number to view the article in the Microsoft Knowledge Base:
To enable diagnostic logging of Group Policy Software Installation processing, follow these steps:
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
- Click Start, click Run, type regedit in the Open box, and then click OK.
- In the left pane, locate and then click the following registry subkey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\DiagnosticsNote You may have to create the Diagnostics registry subkey.
- On the Edit menu, point to New, and then click DWORD Value.
- Type AppMgmtDebugLevel, and then press Enter.
- Double-click AppMgmtDebugLevel, type 4b in the Value data box, and then click OK.
- Quit Registry Editor.
- After you troubleshoot software installations by using Windows application management debug logging, we recommend that you delete the AppMgmtDebugLevel registry value to avoid performance degradation.
- Because of code changes in application management in Windows 8, debug logging is not working in Windows 8 or Windows Server 2012.