Right-click the Excel icon, and select Run as administrator. The Word program icon appears in the search results. In the Search programs and files box, type an application name, like Word. In Windows 8, move your mouse to the upper-right corner of your screen to open the charms bar, and then select the Search icon. In Windows 8.1, right-click the Start button in the lower-left corner of your screen, and then select Search. Try to reactivate Office by selecting the Reactivate button (if shown in a banner) or go to File > Account > Activate Product. Select Yes to allow Office to run as administrator. Right-click the Word icon, and select Run as administrator. Press the Start button in the lower-left corner of your screen. Follow the steps below for your operating system. Running Office as administrator helps fix permission issues that might cause Office activation to fail. Run Office as an administrator to complete the activation After that, click Update Options > Update Now. If you don’t see Update Now, click Update Options > Enable Updates to turn on automatic updates. Update Office to make sure you have the latest fixes for activation errors. In Advanced Security Settings, select the checkbox named Replace all child object permission entries with inheritable permission entries form this object and select OK.Ĭlose Registry Editor and restart any Office app to try activating again. Under Basic permissions, select Full Control (if not already selected), and then select OK. In Advanced Security Settings, on the Permissions tab, select NETWORK SERVICE, and then select Edit. This takes you back to Advanced Security Settings. Under Basic permissions, select Full Control, and then select OK. In Advanced Security Settings, on the Permissions tab, select the user you just added, and then select Edit. Type the logged in user's name, select Check Names, and then select OK.

Right-click S-1-5-20 and select Permissions. In the Registry Editor, expand HKEY_USERS and select S-1-5-20. Select Yes when prompted to allow Registry Editor to make changes to your device. In the Open box, type regedit, and select OK. Right-click the Windows button in the lower left-hand corner of your screen and select Run. Microsoft cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved.īefore making any change in the registry, please back up your registry. WARNING: Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system.

Office 365 product activation failed