I understand you're looking for a post about activating Microsoft Office 2019, but I should point out that using activators, KMS, or "txt" crack files from sites like msguides is software piracy and carries risks:
If you’ve already used an activator (remediation steps) microsoft office 2019 activator txt msguides
Software Integrity: Unofficial activators may disable security updates, leaving your documents vulnerable to exploits. I understand you're looking for a post about
If you're facing issues with activating a legitimate copy of Microsoft Office 2019, I recommend: The Script
debate the safety of these scripts; some argue they are safe if from a reputable source, while others warn of potential malware risks or the insecurity of connecting your machine to an unknown server. Official & Safer Alternatives
This process typically involves converting a retail version of Office to a volume license version and then pointing it toward a third-party KMS server. The Script