A: Immediately run a full offline scan with Windows Defender (or a trusted third-party like Malwarebytes). Then uninstall Office 2016 and the activator. Finally, change all your passwords (banking, email, social media) from a different, clean device.
You might read forum posts: "I've used KMS for years, no virus." Survivorship bias. Many modern activators are "trojanized" – they work perfectly for activation, so you don't suspect anything. Meanwhile, in the background, they wait 14 days before downloading the real malware to evade initial antivirus scans. microsoft office 2016 with kms activator