Situation: The small company gets some new computers and they install Office 365. However, they repeatedly prompts to activate Office 365.
Troubleshooting: This can happen if you don’t uninstall the pre-installed OEM version of Office on your new PC before installing Office 365. You may have two options:
Option 1: Go to Control Panel>Programs and Features to uninstall OEM version of Office.
Option 2: Modify the Registry by following these steps.
- Close the activation window and all Office apps.
- In the search, type regedit and click on Registry Editor.
- On the left side of the Registry Editor, under Computer, navigate to the following key in the registry:HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\16.0\Common\OEM
- Right click the OEM value and click File>Export.
- Save the key.
- After the key is backed up, select Edit>Delete.
- Repeat steps 3-6 for the following key:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\16.0\Common\OEM
- Close the Registry Editor and start Office again.
Please view the step by step video: