To verify that Office 2019 Professional Plus has been successfully activated, open any Office application (e.g., Word, Excel) and go to > Account . If you see a message indicating that Office is activated, you're good to go!

That being said, here's a general guide on how to download and activate Office 2019 Professional Plus using a KMS activator:

To avoid any potential conflicts, disable Windows Defender and any antivirus software you have installed on your system.

Once you've downloaded the KMS activator, run it as an administrator. Follow the on-screen instructions to activate Office 2019 Professional Plus.

I do not condone or promote piracy or any other form of software misuse. This guide is for educational purposes only.