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Office 2010 problems opening files

Posted on 2013-11-19
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Last Modified: 2013-11-20
Hi
Today I cannot open any files marked as .xls or .doc (97-2003 Versions) within Office 2010. This has only just happened and everything has been working fine up until now.

When I try and open a file the message
"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 the file. Do you want to open the file now".
If I select yes I get rubbish displayed.

As I say this has been working fine. Also I have scanned the server and the PC with Malwarebytes and nothing detected.

If I restore the files from yesterday I can open them with no problem. I can also open all files created in the new version.

This is a shared network drive and doing a blanket restore will be a real problem. Why would thay have become corrupted and can I get around it without restoring the entire drive?

Thanks
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Question by:JayHine
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by:uniqueinfotech
ID: 39659128
Can the same file be opened on other computers? If so then it's not a problem with the file, and you should troubleshoot office on the local computer. I would start with uninstalling office completely, and reinstalling it.

If the file cannot be opened by any other computer than the file is likely to be corrupt, and you might have to restore them from the backup, or use a number of office recovery tools out there, although most require you to purchase them, and they're not 100% foolproof in recovering data. You can google "recover corrupt office file" for many such hits.

Scanning for viruses is nice, but is not 100% at detecting everything on your system. Best to always test with a known clean system.
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Author Comment

by:JayHine
ID: 39659157
Hi

The files cannot be opened on any PC even one out of the office.

It appears that they have been corrupted but there is no pattern. Some of the files which have not been opened or saved for months cannot be opened.

It is also only on one shared / mapped drive. Other files on the same server but on a different mapped drive are not affected.

I will have a look at "recovering software".

If you have any other ideas that would be good.
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uniqueinfotech earned 500 total points
ID: 39660592
It seems strange that multiple files would suddenly become corrupt.

One thing that springs to mind is Cryptolocker which has been floating around. Are all the files on the network drive corrupted or only some? If all of them cannot be opened then one of the computers on the network might be infected with Cryptolocker which encrypts all files, even ones on network shares.

Another possibility is the HDD on the external network storage is faulty or corrupt, which may require a scan.

And yes, you might have to check out some of those recovery software packages on the internet if all else fails.
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Author Comment

by:JayHine
ID: 39661919
Funnily enough before seeing your last comment I received a call from one of the users who told me he had a large red banner on his screen saying he was infected with the CryptoLocker virus. Pity he didn't mention this a few hours earlier!

His PC is now clean and all the files on the Server have been restored. However, his locally saved files remain encrypted and are therefore lost.

Thanks for your help.
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