1. First you will need to disable simple file sharing if it is enabled.
    Open Windows Explorer.
    Click Tools -> Folder Options.
    Go to the View tab, find the option Use simple file sharing (Recommended), uncheck it, then click OK.
  2. Copy (Ctrl+C) the path below and paste (Ctrl+V) it in Windows Explorer's address bar, then press Enter:
    %userprofile%\Local Settings\Application Data\VS Revo Group
  3. Right click on the Revo Uninstaller Pro folder and select Properties.
  4. Go to the Security tab. Make sure the following group and accounts are listed (1) and that they all have Full Control permissions (2):
    • the "Admministrators" group;
    • the "SYSTEM" account;
    • your own user account.

    To grant the necessary permissions check the box for Full control in the Allow column, then click Apply (3).

  5. If any of the entries is missing add it: click the Add... button, type "administrators", "system" (without the quotation marks) or the exact name of your account, and click OK. Then grant permissions as described above.
  6. When done simply click OK.