Hi Experts,
i have big problem with my file. My xlsx file which shows an error "Excel cannot open the file 'file name xlsx' 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."
i also used this software, but not work
- Repair my excel
- Kernel data recovery
- Recover Excel File
- Excel Recovery Tools
File open - OK
OLE Header Corrupt - X
OLE Header Structure Corrupt - X
Reading BIFF - OK
Is there any person to fix it?
Help me Please
This my important file
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