"class not registered" error when saving excel

Question

Running Office 2010.

When saving a document in Excel, a window pops up with the document name, followed by "class not registered".

And I can't save the document, any document.

I am using Win7 Ultimate 64bit

Answer 1

Try running Excel with the /regserver switch. With Excel closed, go to the Windows Menu and choose Run. There, enter the following, including the quotes:

"C:\Program Files (x86)\Microsoft Office\Office14\Excel.exe"  /regserver

Of course, your path the Excel.exe may be different. This will start Excel and cause it to rewrite its registry keys and file association and the other plumbing that makes Excel work.

Answer 2

K M

Thank you for the prompt and somewhat answer to my problem.

Any and all Office documents had the problem. I was trying to save them to My Documents.

Office used to save to My Documents, because I have a number of them in there now.

I tried what you said to do in "properties". It didn't work.

So I created a folder on the "desktop". That worked.

My PC is on a home network.

Thanks again

Answer 3

Go to Start > All Programs > Accessories > Run > type "C:\Program Files (x86)\Microsoft Office\Office14\winword.exe"  /regserver > hit OK.

You may also refer the link below to reset the user options and registry settings in Word and see if it helps.

http://support.microsoft.com/kb/822005

Answer 4

Seems to have fixed Excel.

What do you recommend for Word?

Answer 5

Does this issue occur with a specific Excel file or all Excel files?

Do you face this issue only in Excel or in other Office applications as well?

Where exactly are you trying to save the Excel files? Try saving the Excel files in the ‘Desktop’ or ‘My Documents’ and see if it saves fine.

Is the computer connected to a network/domain?

Check if Excel is running in compatibility mode.

Go to C:\Program Files(x86)\Microsoft Office\Office14  >  right click on excel.exe > click Properties  > Compatibility tab > under Compatibility mode, uncheck the box ‘Run this program in compatibility mode for’ > click Apply & OK.