Sunday, 29 March 2015

Office 2010 Unable to activate Error : 0x80070005


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



  • Incorrectly editing the registry may severely damage your system. Before making changes to the registry, you should back up any valued data on your computer. 
  • To open Registry Editor, click Start, click Run, type regedit, and then click OK.

1) Use regedit and rename the Security value under
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:
cscript.exe "C:\Program Files\Microsoft Office\Office14\ospp.vbs" /osppsvcrestart
cscript.exe "C:\Program Files\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

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