1. Run “regedit” under program->run. 2. Navigate to: "HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlSession Manager" 3. Double-click on the key “PendingFileRenameOperations” and clear its content or if there are command that should be run copy it to a file then replace it after you finish sql setup. Press “Ok”. 4. Now click on “Re-run” in “Setup Support Files” window &