Excel cannot open the file because the file format or file extension is not valid.
Verify that the file has not been corrupted and that the file extension matches the format of the file.
Excel cannot open the file because the file format or file extension is not valid.
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thaterrormessage
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Excel cannot open the file because the file format or file extension is not valid.
*IS THIS ERROR HAPPENING NOW? Reply in real-time below.* Hold software providers accountable - we rely on the community to acknowledge the same errors and their workarounds/fixes.