Genuine Microsoft Office receives regular security updates. Pirated copies either block Windows Update or are excluded from receiving patches. That leaves you vulnerable to exploits like CVE-2021-40444 (a zero-day remote code execution flaw) or memory corruption vulnerabilities found in Office 2021.
Once you've obtained a free product key for Microsoft Office Professional Plus, you'll need to activate the suite using the following steps: microsoft office professional plus product key free 2021
Instead of searching for a free product key, users can consider the following alternatives: Genuine Microsoft Office receives regular security updates
Most websites claiming to offer lists of free, working product keys are providing "MAK" (Multiple Activation Keys) microsoft office professional plus product key free 2021
Perhaps you already downloaded an activator or entered a key from a suspicious site. Here’s what to do now: