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

The magic number here is the (Process ID)—in this case, 4588 .

"The required port 443 is already occupied by another application." The magic number here is the (Process ID)—in

netstat -aon | findstr :443 You will see output similar to this: TCP 0.0.0.0:443 0.0.0.0:0 LISTENING 4588 and guest interaction proxies). Without it

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. and then— red text. Now

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.

Now, find which application owns that PID: