Licensing servers are sensitive to your geographic location and IP address. Turn off any active VPN connections.
: If you're unable to activate online, you can try activating by phone. This option is available during the activation process.
Often, the connection between your installed Office app and its licensing service is just "glitchy." Control Panel Programs and Features Microsoft Office installation in the list. Select it and click , then choose Quick Repair If that doesn't work, try Online Repair (this is more thorough but takes longer). 2. The "Campus/Trial" Conflict
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If you downloaded Office from a "Retail" link but are using a "Volume" key (or vice versa), the software will reject the key.

