You are experiencing a false positive. Use the official Cleanup Tool or disable the AGSS service via Creative Cloud preferences. Do not let a software glitch ruin your day.
If nothing above works—whether you are a paying customer or not—you need to scrub Adobe completely and reinstall. how to fix adobe genuine software verification failure
The most common fix for paying users is a corrupted local license cache. You are experiencing a false positive
Some antivirus or firewall programs falsely flag Adobe’s verification service as malware and block it, causing verification failure. causing verification failure.