On a Windows Vista-based or Windows 7-based client computer, you can still access offline files even though the file server is removed from the network

Run this commands

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

then reboot

or





1. Click Start, type regedit


2. Locate the following registry subkey, and then right-click it:
   
   HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\CSC
   
   


3. Point to New, and then click Key.


4. Type Parameters in the box.


5. Right-click Parameters, point to New, and then click DWORD (32-bit)Value.


6. Type FormatDatabase, and then press Enter.


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


8. In the Value data box, type 1, and then click OK.


9. Exit Registry Editor, and then restart the computer.