How to Fix Error 1402 Permissions

1. Check for registry damage by opening the 'Start' menu and clicking 'Run.' In the 'Open' dialogue box, type 'scanreg/fix' and click 'OK.' Click 'Yes' when a pop-up window asks you if you want to restart the computer and attempt the Windows install again after the computer fully reboots. If you still see the same registry error, some further troubleshooting is required.
2. Log out of your current user profile and log in under a different profile. Another cause of this error is if you are attempting to install Windows on a damaged user profile. If Windows successfully installs Office on a different profile, you will likely need to delete and recreate the profile you first tried to use (see Resources section for more info on how to do this).
3. Deactivate user profiles before attempting to install Office. This is done by clicking 'Start' and 'Control Panel,' then selecting the 'Passwords' panel. Click the 'User Profiles' tab and then click the check-box next to 'All users of this computer use the same preferences and desktop settings.' Once again, restart the computer and attempt to reinstall Office. If you still encounter the same error, the version of Office you are trying to install may be corrupted or you may need to contact Microsoft to troubleshoot a problem with the Windows registry.