Wait, need to check if Office 2007 is still officially supported. Microsoft ended support for it in October 2017, so using it now isn't recommended for security reasons. I should include a note about that, advising users to upgrade if possible. But the main question is about activation, so maybe as a separate section after the main instructions.

When asked how many computers this copy of Office has been installed on, select (if you are reinstalling) or 1 . Choosing a higher number will cause the system to reject the key. Step 5: Enter the 48-Digit Confirmation Code

Use such tools .

Online activation servers for Office 2007 are mostly offline. Telephone activation is generally the only supported method, though some users report that automated telephone activation no longer works, forcing a transfer to a human agent. What if I lost my product key?

– Ensure you are using the 25-character product key that came with your Office 2007 purchase, not a Windows product key (which is often mistakenly used).

You will likely need to pursue telephone activation and a confirmation code in several common scenarios:

Type this code into boxes A through H in your Office 2007 wizard and click Next to finish. Method 3: Run as Administrator

If you have a valid product key, try installing and activating by phone using Microsoft’s automated system. Otherwise, consider upgrading to a free alternative like LibreOffice or a modern Microsoft 365 subscription.

– Ensure you are online.

: Be wary of online "activation code generators" or pop-ups claiming your activation has expired, as these are often scams designed to deliver malware or trick you into paying for unneeded services.