Learn How to take Ownership of a file in Windows Vista Or Windows 7
In Windows 7 Or Vista when we try to edit or delete a system file it may show an error message as shown below. Sometimes we need to remove a system file which we consider it useless, for example mfpmp.exe etc. we need to take ownership of the file in order to rename it or delete it.
Step 1: Open command prompt (Press Start+R, Type cmd and Enter).
Step 2: In command prompt, type: takeown /f (Full path of the file and file name) and press Enter
Example: takeown /f C:\Windows\System32\mfpmp.exe
Step 3: Again in command prompt, type:
icacls (Full path of the file and file name) /grant (user name):F and press Enter
For example, icacls C:\Windows\System32\mfpmp.exe /grant DENNIS:F
Now You Can delete or rename the file. If you still can't, you may need to reboot and try again. This is one technique for taking ownership for any file.