This copy of Microsoft office is not genuine

Issue:

After installing MS Office Genuine Advantage (OGA) Notifications (KB949810) from Windows Update, OGA Validation will perform genuine test on installed Microsoft Office XP, Office 2003, Office 2007 and Office 2010 software.KB949810 OGA Notifications update is designed so that end-user cannot uninstall or removed the update using “Add and Remove Programs” or “Program and Features” in the Control Panel.

Disable and Remove OGAAddin from within Office Applications

• Run one of the Office app such as Word, Excel, PowerPoint as administrator.
• Open Windows Explorer, go to %SystemDrive%\Program Files\Microsoft Office\Office12
• Right click on Office app executable, e.g. winword.exe, excel.exe, powerpnt.exe to run as administrator.
• Go to Options--> Add-Ins.
• Select COM Add-ins under Manage drop menu list, and click Go.
• Disable or remove the OGAAdmin.
• Repeat above steps for each and every Office applications installed.

Reff: http://support.microsoft.com/kb/949810shshshsghs