The same here, Mac Book Air and Parallels Desktop 9, with MS Excel 2007.
Note that other applications are working, such as "Microsoft Office Picture Manager".
I also reinstalled Parallels Tools but the problem is still there.
Please help us!
UPDATE: Probably I found where the problem is. It depends on the position of the file. If the same file is in a different folder, it can be opened correctly. I have seen that the problem is for the files in the Dropbox folder.
I stopped the Dropbox program (on the Mac) but again it is impossible to open an Excel file.
After stopping the Dropbox program, I renamed the Dropbox folder and it works!!! The Excel files can be opened in MS Excel 2007 under Windows 7.
It seems really strange.
Has Parallels Desktop 9 a problem with Dropbox folders?
Last edited: Sep 10, 2013