Error message "File format is not valid"

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

When I opened my saved Excel file, I've received the error message "File
format is not valid". I've tried to open the file with another format, but no
luck. How can I fix this error?
 
Hi,

What is the filename extension now and how does the file icon appears.

Challa Prabhu
 

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