Method one: use registry entry

1. Open up registry editor (WARNING: Only for Advanced Users)
2. Browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Csc
3. Add a new key (folder) called Parameters
4. Under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Csc\Parameters, add a new DWORD called FormatDatabase and set its value to 1
5. You will need to reboot the PC afterwards.

Method two: clear the CSC folder

1. Located to C:\Windows\CSC
2. To access this folder, you need take ownership firstly.
3. Right-click CSC folder that you want to take ownership of, and then click Properties.
4. Click the Security tab, click Advanced, and then click the Owner tab.
5. Click Edit. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
6. Click the name of the person you want to give ownership to.
7. .If you want that person to be the owner of files and subfolders in this folder, select the Replace owner on subcontainers and objects check box.
8. Click OK.
9. Then clear all content in this folder.

Offline files and DFS where the CSC needs to be cleared (4.)

REG ADD "HKLM\System\CurrentControlSet\Services\CSC\Parameters" /v FormatDatabase /t REG_DWORD /d 1 /f