While working in windows (excel) I received message : Your changes could not be saved to filename.xls because of sharing violation. Tray saving to a different file. I received this message when I tried to save the changes I made in file. Then I get an option to save as with file name 82FF6300 ( windows is generating always the similar combination of letters and numbers when giving option save as "two letters and 6 numbers"). I was trying to find the solution but with no success. Any help would be appreciated. I have installed OS X 10.8.2 and parallel desktop 7. Regards, Oliver