Corrupt Excel File

Greetings, I have a user who was working on an Excel 2007 file from a thumbdrive.. all of a suddem the file will not open and generates the following error:

"Excel cannot open the file 'filename.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. (OK)"

I hit Ctrl-Shift-i to get the code for that error (101590)

Any ideas how to repair?

I have tried the following to no avail:

- Open and Repair tool
- Opening with OpenOffice
- http://office.microsoft.com/en-us/excel-help/repairing-a-corrupted-workbook-HA010097017.aspx
- http://support.microsoft.com/kb/928979

LVL 23
Justin DurrantSr. Engineer - Windows Server/VirtualizationAsked:
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Ardhendu SarangiConnect With a Mentor Sr. Project ManagerCommented:
1. Have you tried opening it with Excel Viewer?

Link -> Excel Viewer
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KimmyelCommented:
Hello,

Can you please try the following:
1. Start>Run>Write "excel /A" and then try to open the document - Does it work?
2. Try to rename the file to something shorter
3. Try to rename the file to something shorter and extension to .xls
4. Start>Run>Write "excel /S" and then try to open the document - Does it work?
5. Remove everything from C:\windows\temp directory then reboot.

Regards
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jimyXCommented:
Some times when Excel files become corrupted there are tools could be used for repairing and recovering the data, but not always, because Excel files can be completely damaged and no repairing tools will fix them. All depends on your file and the action that made the file corrupted. If you attach your file (if the data is not sensitive) at least it would be easily checked.
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Ardhendu SarangiSr. Project ManagerCommented:
Dear Kimmyel,

Just for your information -

Regarding your point #3, I don't think renaming the file extensions is going to work as an XLSX file extension is an Open XML Format Spreadsheet file. This is different from the way Microsoft used to handle the files in the past.

Also Point #1 is asking the user to restart Excel without any add-ins. If the excel file is corrupted, disabling add-ins will have no effect on the file.

Same goes for points 2 and 4 too.

i am intrigued abt your point 5 as this is the first time I have seen this suggestion. Care to elaborate how that works?

Thanks,
Ardhendu
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Justin DurrantSr. Engineer - Windows Server/VirtualizationAuthor Commented:
I get the same error with Excel viewer, excel /A and excel /S
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Ardhendu SarangiSr. Project ManagerCommented:
would you mind posting the file here?

Thanks.
Ardhendu
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Justin DurrantSr. Engineer - Windows Server/VirtualizationAuthor Commented:
can I email it to you?
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Ardhendu SarangiSr. Project ManagerCommented:
u can... my email id is in my profile. Posting my email id in the forum would be a violation of the rules.
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Justin DurrantSr. Engineer - Windows Server/VirtualizationAuthor Commented:
Ok.. sending now
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Ardhendu SarangiSr. Project ManagerCommented:
Hi Justin,
I received your file however it seems that this file cannot be repaired. I tried a few options from my side but nothing seemed to work.

are you sure this is an xlsx file because the contents of the file do not seem consistent with an xlsx file format?

But i am sorry to say the data looks unrecoverable at this point.

- Ardhendu
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Justin DurrantSr. Engineer - Windows Server/VirtualizationAuthor Commented:
Yeah is it an XLSX.. well according to the user it is anyway.
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Ardhendu SarangiSr. Project ManagerCommented:
i am sorry i dont think the contents of this file can be recovered.

- Ardhendu
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Justin DurrantSr. Engineer - Windows Server/VirtualizationAuthor Commented:
Is there a 3rd party repair tool you recommend?
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Justin DurrantSr. Engineer - Windows Server/VirtualizationAuthor Commented:
Didn't resolve but the user tried
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