At times, you may need to find the Group Policy Registry location or the Registry key for corresponding Group Policy setting. If your edition of Windows 10 does not ship with the Group Policy Editor, you can make the changes, provided you know the corresponding Registry key.

If you need to find this, you have a few options:

1] Use the Group Policy Search (GPS) service. It enables you to search for registry-based Group Policy settings used in Windows operating systems.

2] Download the Group Policy Settings Reference Guide which lists the Group Policy setting agains its corresponding registry key. It has been updated for Windows 10 v1607 too.

3] Visit this MSDN link.

4] Use SysInternals Process Manager.

In this way, you can find out which Registry key a Group Policy setting modifies.