Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link ((new)) May 2026

tasklist | findstr 4488

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

netstat -aon | findstr :443 You will see output similar to: TCP 0.0.0.0:443 0.0.0.0:0 LISTENING 4488 Port 443 is the default port for HTTPS

The full error typically reads: "Required port 443 for Veeam Backup & Replication is occupied by another application. Please specify another port or stop the application that uses this port and try again." While the error message seems straightforward—"another app is using the port"—the resolution is rarely a simple matter of killing a process. Port 443 is the default port for HTTPS (HTTP Secure) traffic, and in a Windows Server environment, multiple roles, services, and third-party applications compete for it. Remember, port 443 is prime real estate

netsh http show urlacl | findstr :443 This will list all URL reservations. Look for something like: http://+:443/ or https://+:443/ reserved for a specific user or service group (e.g., NT SERVICE\SSRS ).

Remember, port 443 is prime real estate. Decide which application—Veeam or the existing service—is more critical for your environment, then adjust accordingly. With the steps above, you’ll have Veeam Backup & Replication listening securely and ready to protect your data. Need further assistance? Visit the official Veeam R&D Forums or open a support case with Veeam Customer Support. Include the output of veeamportssniffer.exe (available in the Veeam ISO tools folder) for rapid troubleshooting.