Can anyone please explain how is it possible to have a file from a shared drive open at two different systems at the same time. One system is NTsp6 and the other one is win2k sp1. The file is on the shared drive S: Under the premissions of the file it seems that "Everyone" has full access to the file. I can even take "Ownership" of the file. Everyone can open the file and save at the same time which will create problems. It is an Excel sheet therefore you can set the sharing premissions on the file from "tools" - "share workbook". When you click on this menu selection. You can see that "allow more than one user to make changes at the same time" is check BUT it's faded and there's no way of unchecking it... CAN ANYONE HELP. Who can uncheck it. I everyone can take the "ownership" but noone can unchek it... It's very important file .. help