You can find troubleshooting steps for common installation or activation issues for Microsoft 365 for Mac here. If the issue you're having is not in these lists, you may also be experiencing an emerging issue. See the Mac section in Fixes or workarounds for recent Office installation or activation issues for help and updates on these recent issues
What to try if you can't install or activate Office for Mac
Activation and Download/Install resolutions on link below
https://support.microsoft.com/en-us/office/what-to-try-if-you-can-t-install-or-activate-office-for-mac-5efba2b4-b1e6-4e5f-bf3c-6ab945d03dea#PickTab=Install
Can't activate Office after installation.
"No license found" error / Can't activate Outlook.
Office keeps asking me to sign in / "Authentication Expired" error
One-time purchase of Office confirmed, but still can't activate
"You need to activate Office for Mac within X days" after activating.
Activated with the wrong license
Unknown error" or "clock error" when you activate Outlook 2016 for Mac
Download/Install issues
https://support.microsoft.com/en-us/office/what-to-try-if-you-can-t-install-or-activate-office-for-mac-5efba2b4-b1e6-4e5f-bf3c-6ab945d03dea#PickTab=Install
