How To Activate Microsoft Office With a Product Key (Both Routes)
How to activate Microsoft Office: File > Account for Professional Plus keys, setup.office.com for consumer and Mac editions, plus fixes for common errors.
Category Troubleshooting
Troubleshooting Windows and Office activation: error codes such as 0xC004F050 and 0xC004C020, the Activate Windows watermark, phone activation and Confirmation IDs, explained step by step.
How To Find Your Windows Product Key (Windows 10 and 11)
Find your Windows product key with Settings, one PowerShell command, slmgr, or your Microsoft account, and what to do when there is no key at all.