Excel file Corrupted

Hello support,

This is our last ditch attempt in recovering a corrupt Excel file (.xls), hoping someone might have some suggestions?
We have exhausted our backup options, a month of backups and all instances of this file is corrupt.
We have attempted to "open and repair" with no luck. Modifying extension, etc.

Error message:
Monthly .xls: file format is not valid

We're still digging into on our end while reaching out in attempt to remedy ASAP.

file does contain private company data, so I would be unable to transfer this.
I will pass on any additional information that may be helpful in troubleshooting this.

Thanks!

Chris Scherman
Young Innovations
847-458-5486
bflanneryAsked:
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Martin LissOlder than dirtCommented:
If you can open it, try saving as an xlsb file.
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Rory ArchibaldCommented:
Can you open the file with a text editor and just post the first line of symbols?
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EirmanChief Operations ManagerCommented:
Did you try opening it with Open Office?
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To disable VBA and Add-ins ...
Restart the computer in Safe Mode. Click on Start then Run then enter the path to excel.exe
Try opening the file.
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http://www.techrepublic.com/blog/10-things/10-ways-to-recover-a-corrupted-excel-workbook/
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This seems to be the best recovery software available
http://www.kerneldatarecovery.com/excel-recovery.html
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Martin LissOlder than dirtCommented:
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EirmanChief Operations ManagerCommented:
This recovery software looks quite good as well ...

https://www.fixtoolbox.com/excelfix.html
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bflanneryAuthor Commented:
Thank you Martin and Eirman, I will follow up with results.
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Roy CoxGroup Finance ManagerCommented:
Have you tried opening with Open Office?
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bflanneryAuthor Commented:
Thanks for your advice and quick feedback to my question/issue.
This tool was able to recover/repair our excel file.
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bflanneryAuthor Commented:
It was created as and .xls (2003)
Renaming the extension did not work
Opening it up in OpenOffice (Calc) resulted in the same "format error"

But thanks to everyone for there quick input!
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EirmanChief Operations ManagerCommented:
I'm glad that you recovered your file.
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