- If you are facing issues in activation then make sure only one version of Office is installed and [remove Office licenses](https://support.microsoft.com/office/b032c0f6-a431-4dad-83a9-6b727c03b193) and apply activation file again.
- If issue is still not resolved then check steps to completely remove Office [here](https://office-reset.com/) and [here](https://support.microsoft.com/office/ec3aa66e-6a76-451f-9d35-cba2e14e94c0).
MAS online KMS option supports Windows 7 Pro and Enterprise.
To activate other Windows 7 editions in,\
Non-UEFI/GPT systems - Use Windows Loader [Official thread](https://forums.mydigitallife.net/forums/windows-loader.39/) \| [Mirror](https://app.box.com/s/bnchc6hten44adunlcpz9ya9j0uucfs2)\
UEFI-GPT systems - [EzWindSLIC](https://github.com/Dir3ctr1x/EzWindSLIC)
**Note:** These loader/slic activators sometimes may cause the system boot issue.