Hi,
We have a problem where many files on a server appear to have become corrupted. I can see the timestamp has updated on the folder they are in at 9.12 this morning but there is no obvious update on the files other than they won't open.
Below is an example of an error message I get when trying to open an Excel file:
Excel cannot open the file 'David @ Readie Unsecured Work June 2013.xlsx' because the file format or file extension is not valid. Verify that the file has not become corrupted and that the file extension matches the format of the file.
Excel files are not the only types affected. The same happens with many other types e.g pdf and dwg.
I heard somebody mention that it could possibly be related to third party backup applications that run on Windows servers but I can't find any information on this.
Other thoughts are could this be a SAN issue or a virus?
Cheers
Paul