Word/Excel files being corrupted and return error reg file extens

[PaulTiffin]

Hi everyone,

I hope somebody can help me with this issue.

I am using Word and Excel 2003 and have had a couple of files become
corrupted after opening and closing them with no issue a number of time.

The message displayed for the Excel file was "The file you are trying to
open,{filename}, is in a different format than specified by the file
extension. Varify that the file is not corrupted and is from a trusted source
before opening the file. Do you want to open the file now?"

When you try to open both the Word or Excel file i get a message
"Client_Disconnect" and the file will not open or displays a blank file.

All of the data in the file has gone. I have not been able to recover the
file using steps found on Microsoft web site.

Has anyone come across this error and if so, has anyone had any luck trying
to resolve it?

 

[Rahul Relan]

Hello Paul
In some cases after upgrading to Excel 2007, you may get the following error:
The file you are trying to open .xlsx is in a different format than
specified by the file extension. verify the file is not corrupted and is from
trusted source before opening the file. Do you want to open the file now?
And paul this errors particularly occurs when you’re trying to open an XLS
file (Excel 2000-2003) with Excel 2007. In most cases, the problem can be
solved by defining MIME types and associating them with extensions.
When you’re using a Document Management System (like Sharepoint or
Livelink), you can try adding these:
..xls = application/msexcel
..xlsx = application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
However, if you don’t want to look for a solution, but just want to solve
the problem, insert this key in your registry to suppress the notification:

[HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Excel\Security]
“ExtensionHardeningâ€=dword:00000000

You can accomplish the above by doing the following:

Open your Registry (Start -> Run -> regedit.exe)
Navigate to HKEY_CURRENT_USER\SOFTWARE\MICROSOFT\OFFICE\12.0\EXCEL\SECURITY
Right click in the right window and choose New -> DWORD
Type “ExtensionHardening†as the name (without the quotes)
Verify that the data has the value “0″


And this precess is called as d word.