Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link Jun 2026

: Users on Reddit recommend running netstat -anob in an elevated command prompt to identify the specific process ID (PID) currently bound to port 443.

: Stop the conflicting service long enough to complete the Veeam upgrade. Permanent Fix :

Option C — Move Veeam to a different port (use only if changing the other app is impossible) : Users on Reddit recommend running netstat -anob

The number 4488 is the PID. Now, find the process name:

Securely transmitting data to service providers. Now, find the process name: Securely transmitting data

This article provides a complete guide to understanding, diagnosing, and permanently resolving this port conflict.

Attempt to restart the original service on a different port if possible. Option 3: Use a Dedicated Backup Server Option 3: Use a Dedicated Backup Server If

If the PID is , the port is claimed by the Windows kernel System process. This indicates a native Windows driver or feature (like IIS or Hyper-V Replica) is hosting an active HTTPS endpoint. To trace specific non-system executable filenames, run: powershell tasklist /FI "PID eq " Use code with caution.

"Hey Elias," Kevin had said, looking slightly nervous. "I needed to spin up a quick test lab to simulate that patch for the accounting software. I didn't want to bother the production cluster, so I just threw it on the repo server since it has all that RAM. Is that cool?"

Change the port from 443 to a different, available port (e.g., 444 or 8443). Update the replication port for each virtual machine.