Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application May 2026

Run netstat -aon | findstr :443 one more time. Now you should see the Veeam services (like VeeamBackupSvc ) happily listening on port 443.

Your heart sinks. You know port 443 is the lifeblood of Veeam’s communication (encrypted traffic between the backup server, hosts, and guest interaction proxies). Without it, your backup jobs are dead in the water. Run netstat -aon | findstr :443 one more time

tasklist | findstr 4588 Or, in PowerShell: and guest interaction proxies). Without it