My user were on office 2000. We deployed office 2010 and now we are having issues with Excel 2010 that cannot open older 2000 exel files. Getting the following errors
"Excel cannot open the file because the file format or file extention is not valid. Verify that the file has not been corrupted and that the file extention matches the format of the file" for this message the file does not open at all.
"Excel found unreadable content in filname.xls. Do you want to recover the contents from this workbook? If you trust the source of the workbook, click yes." Doing so open the file in protected view but the contents are all messed up and useless.
If i try opening this file in windows 2000 or open office it opens fine. Tried opening it a couple windows XP and windows 7 machine and all are getting the above error.