Root cause appears to be related to permissions on disk class device objects in the registry – specifically the security descriptors related to the Security value under
HKLM\CurrentControlSet\Control\Class\{4D36E967-E325-11CE-BFC1-08002BE10318}\Properties.
RESOLUTION :
1) Use regedit and rename the Security value under
Open Registry editor : Start > Run > In Run window Type Regedit and click on OK and navigate to the following registry Key Mentioned below
HKLM\CurrentControlSet\Control\Class\{4D36E967- E325-11CE-BFC1-08002BE10318}\Properties to Security.OLD
2) Reboot the machine
3) Open a command prompt and browse to C:\Program Files\Microsoft Office\Office14 (or C:\Program Files (x86)... if a 32-bit version of Office has been installed on a 64-bit version of Windows)
4) Run command lines similar to the following:
1. Open Command prompt (CMD) in elevated mode.
32 Bit Office :
cscript.exe "C:\Program Files\Microsoft Office\Office14\ospp.vbs" /osppsvcrestart
For 64 Bit Office
cscript.exe "C:\Program Files\Microsoft Office\Office14\ospp.vbs" /osppsvcrestart
copy and paste the command line mentioned below to activate Office.
for 32 bit Office :
cscript.exe "C:\Program Files\Microsoft Office\Office14\ospp.vbs" /act
for 64 Office :
cscript.exe "C:\Program Files(X86)\Microsoft Office\Office14\ospp.vbs" /act
5) If all is well, running the second of the above command lines should result in a successful activation of Office 2010. To confirm this, open an Office 2010 application, go to the File tab/Help, and check for the phrase "Product Activated" near the top, right corner.
