Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi, Chicho1949,
If you had the Office 2010 beta installed, please remove all traces of it, this includes add ins that you might have installed such as the Outlook Social Connector or Outlook Hotmail Connector.
Also try clearing out your temporary Internet Files.
Click Start, type: %temp%
Hit Enter
Delete the contents of that directory
Restart and try installing again.
How to uninstall or remove Microsoft Office 2010 suites - Fixit
http://support.microsoft.com/kb/290301
Error 25004. The product key you entered cannot be used on this machine” when Installing Microsoft Office 2010 (previous installs create the issue)