To fix installation errors of Office 2010, you can try the following: Try the following three steps: Step 1) Run command msiexec /unregister Run command msiexec /regserver Step 2) Give full permissions to the folders c:/windows/installer Give Full permission to folder c:/windows/temp Step 3) Boot the computer in Clean boot.
1) Create a new administrator account. 2) Log on and launch the installer. If things don’t quite work perfectly now: 3) If you receive errors accessing your ProgramData folder, use the TakeOwnership registry hack to take control of the entire ProgramData folder, and if needed, create a “Microsoft Office” folder with “Microsoft Office 2010 Tools” inside it under %programdata%MicrosoftWindowsStart Menu. 4) Your error may return at the end of the installation, but don’t worry, it’s finished and Office is now installed. Switch user (don’t log off!) and go back to your own user. Double-check that everything works. Now, to turn off your computer, press and hold the power button for five seconds. This will force the computer to shut down instantly, which will close the installer with the error without giving it the opportunity to roll back its changes.