I have been using Excel 2010 (part of Office Professional 2010, 32-bit) on my home Windows 8 PC (64 bit) for several months without any problems. About one week ago I noticed that Excel would frequently stop responding when I try to save my file. The problem happens if I use "Save" or click on the "floppy-disk" symbol to Save. The "donut" symbol appears and the Excel header displays the message "Microsoft Excel ... (Not Responding)". The only way to proceed is to end the task using Task Manager, or right-click on the header and select "Close the Program". In either case the Excel file is lost and I'm left with something like "F4BA0000" or "124EB907.tmp" as a file.
Once this happens, I need to reboot my PC otherwise Excel will no longer save any file.
I've noticed the same thing happening sometimes with Word 2010 too.
Some of the things I've already tried:
1. Starting Excel in "safe" mode by holding the control key.
2. Installing all the latest Windows 8 and Office 2010 updates.
3. Turning off my anti-virus software.
4. Disconnecting my PC from the internet.
5. Setting the default printer to "Microsoft XPS Document Writer"
6. Turning off all Add-Ins (there is only one, the standard Analysis Toolpack)
7. "Repairing" Office 2010 (using Control Panel -> Programs & Features -> Change -> Repair)
8. Using file formats for Excel 97-2003 (file.xls) or Excel 2010 (file.xlsx)
None of this has helped.
I've found that I can save the file if I used "Save As", but only if I use a new filename. Also, if I rename the "124EB907.tmp" file to "124EB907.xlsx" then I can open the file in Excel (but still not save it).
Any help or advise would be much appreciated. Thanks!