Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application ((new)) <EXTENDED ●>

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

tasklist | findstr 4588 Or, in PowerShell:

We’ve all been there. You’re in the middle of deploying Veeam Backup & Replication, or perhaps applying a critical update. The installation wizard is humming along, and then— red text. Run netstat -aon | findstr :443 one more time

Now, find which application owns that PID:

A Veeam server should ideally be a dedicated machine. If you’re constantly fighting for ports, consider moving Veeam to its own physical or virtual server where nothing else runs on ports 80, 443, or 9392 (the Veeam console port). Have you run into a different process hogging port 443? Mention it in the comments below—let’s crowdsource a full list of offenders! You’re in the middle of deploying Veeam Backup

"The required port 443 is already occupied by another application."

The magic number here is the (Process ID)—in this case, 4588 . If you’re constantly fighting for ports, consider moving

netstat -aon | findstr :443 You will see output similar to this: TCP 0.0.0.0:443 0.0.0.0:0 LISTENING 4588