Norton Anti-Virus and Office
If you use Norton Anti-Virus, please read this:
Latest Information on Using Microsoft Office with Norton Anti-Virus.
Here's an alternate link to the same information
and follow the links to other information listed on the same page.
Norton AntiVirus includes an option called the "Office Plug-in" and this option, if activated, can cause many problems with Office installation and operation. You'll want to disable it.
Disabling NAV doesn't disable the plug-in; you need to go a step further. In NAV go to Options. In the Miscellaneous section turn off "Enable Office Plug-in".
Some NAV versions (CE for example) don't include the Office Plug-In, but a previously installed version of Norton AV may have left the Office Plug-In DLL installed, registered and active.
Use Windows Explorer to search for: officeav.dll
If you find it, click Start, click Run and type this:
regsvr32 /u "\officeav.dll"
then click OK