You may have to reinstall. It's never a good idea to install a service pack of any kind without electing to back up the replaced files. Alternatively, you can run SFC/SCANNOW and provide the original installation disk, which will check and replace any changed files.
Dig deeper on Windows Operating System Management
Related Q&A from Serdar Yegulalp, WinIT
Frustrated admins have been dealing with extend.dat error messages since Outlook 97. Our expert sheds some light on this all-too-common Outlook error.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.