Corruption after file recovery

[joefuss2k]

Hello. My boss recently deleted a large amount of files created in Excel 2010. I recovered (undeleted) the files, but when he attempts to open them the following error pops up: The file you are trying to open is in a different format than specified by the file extension. Verify that the file is not corrupted and is from a trusted source before opening this file.

Any ideas?

Thanks in advance

[joefuss2k]

Some of the files give this error: Excel cannot open the file **** because the file 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.

[s.murphy]

How did you recover the files?

[joefuss2k]

Using an undelet program.

[ginger35reks]

Try to recover excel file thanks to following software Fix Excel files

[davegeeit]

In that case you can try any third party utility, which can recover your data fast and very efficient way. Many companies available on the internet, but i would like to suggest you to use recoveryfix for Excel data recovery software because this company offer free trial version of software.

http://www.recoverexcel.org/

Thanks