I have two PCs at home.: A laptop running Win-7 64-bit, and a desktop running Win-7 32-bit. Both are running Office 2010. Often, but not always, when I save an Excel workbook from one PC onto a shared hard drive on my home network and
then try to open it on the other PC, the other PC displays the "file appears corrupt, would you like Excel to try to recover/repair?" message when I try to open the file. This also happens sometimes when saving to a thumb-drive and attempting to open
it on a non-connected laptopn running XP and Ofice 2007. Most times, Excel successfully repairs/recovers the file without issue. Infrequently, it doesn't repair everything. Today it failed completely and was unable even to open the file on
another PC. I've tried various methods to copy the file. I've experienced the problem when I use Windows Explorer to copy the file from one disk to the other, and also when using both DOS COPY and XCOPY commands. The issue occurs with
many, but not every Excel file I copy. And it doesn't happen every time - only sometimes. It seems to occur more frequently with certain specific files, and and rarely or never happens with specific other files. It occurs in both directions
(i.e. with both the 64-bit Win-7 machine as the "source" machine and with the 32-bit Win-7 machine as the source machine.) All of the files I have problems with are .xlsm files. I have not tried to confirm that it happens only with .xlsm
files. It doesn't seem to matter if the destination file is being overwritten, or if it is being created from scratch by the copy source. I'm baffled. Any suggestions as to why this is happening? How I can prevent it? Thanks.
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