A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
Here is one discussion of the problem:
http://support.microsoft.com/kb/131553
here is a thread with one solution
http://community.spiceworks.com/topic/91655?page=1#entry-335695
Here was one othe suggestion
uninstalling KB 978382 worked ...
Known issues with this security update
- After you install this security update, you may receive an error message that resembles the following when you try to save a shared workbook: The file is no longer shared This problem can occur if the file is saved to a network location and then configured
as a shared workbook. Microsoft is researching this problem and will post more information in this article when the information becomes available.
To work around this problem, use either of the following methods:- To avoid this problem when you create a workbook that must be shared, turn on the shared workbook option before you save the workbook to a network share.
- If the problem has already occurred, follow these steps:
- Open the shared workbook, and then save it to a local drive.
- Turn on the shared workbook option.
- Save the workbook on the network share.
If this answer solves your problem, please check, Mark as Answered. If this answer helps, please click the Vote as Helpful button. Cheers Shane Devenshire