Try using "Run As Administrator" to start the installer. That should give it the required rights.
Win 8 - Right click on desktop shortcut, select “run As Admin” from dropdown. On Win8 Start Screen, right click on the “tile” and select “Run As Admin” from the task bar that pops up on bottom of screen
Run a Program as Administrator in Win7
**http://www.sevenforums.com/tutorials/11841-run-administrator.html?ltr=R******
Win 7 Run As Admin tips
What you need to do is "runas admin":
• Go to the start menu and find the program icon you want to start
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<Shift> <Right Click> on it
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Select “Run as …”
If that doesn’t work try this:
• In the start menu , right click on the shortcut for any Office app, select “RunAs Admin”
• If runas does not appear, right click and drag the shortcut to the desktop
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create a shortcut on the desktop.
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Right click on the desktop shortcut,
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runas admin should be there.
Activate the application/office:
·
2007 Office button or 2010/2013 File tab
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Help
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Click on “Activate the Application”
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Follow prompts to enter product key
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Close the app
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Restart app normally
Win 7 - 5 ways to Run As Admin - link
***http://www.sevenforums.com/tutorials/11841-run-administrator.html*******
FYI: for this situation, you can consider Vista and Win7 to be essentially interchangeable with only minor differences between the user interface in the 2 versions.
In Win7, even when you are logged in as administrator, UAC no longer gives you “Full” administrator rights. To get all of the access you now also have “run as administrator”
It appears there is an error where your userid is not being allowed to update the activation information in the registry.
The general process is :
· Close all of the office apps
· Start one of the Office apps using any one of the following “run as admin” techniques
· Activate office
· Close the app
· Start it normally, confirm the message has “gone away”
· If the message is gone, reboot the computer
· Start the office app again to confirm that the message really is gone for good (was saved in the registry)