How to Fix Corrupt Group Policy Database File

In order to fix the corrupted GPO Database file, you can easily restore the database file to its original state using the following steps outlined below:

1. Open the %SystemRoot%\Security folder, create a new folder, and then name it "OldSecurity".
2. Move all of the files ending in .log from the %SystemRoot%\Security folder to the OldSecurity folder.
3. Find the Secedit.sdb file in the %SystemRoot%\Security\Database folder, and then rename this file to "Secedit.old".
4. lick Start, click Run, type mmc, and then click OK.
5. Click Console, click Add/Remove Snap-in, and then add the Security and Configuration snap-in.
6. Right-click Security and Configuration and Analysis, and then click Open Database.
7. Browse to the %SystemRoot%\Security\Database folder, type Secedit.sdb in the File name box, and then click Open.
8. When you are prompted to import a template, click Setup Security.inf, and then click Open.