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

: Run the following command: netstat -ano | findstr :443

: Open Task Manager, go to the Details tab, and find the application matching that PID. 2. Common Conflicts and Solutions : Run the following command: netstat -ano |

Use the command line to find which process is holding the port: Open Command Prompt as Administrator. netstat -ano | findstr :443 (Process ID) at the end of the line. netstat -ano | findstr :443 (Process ID) at

This error is a common blocker when upgrading to or installing Veeam Backup & Replication v13 port 443 is now hardcoded and required for the Veeam Web Service and API Gateway The Visual Way (Task Manager): Open Task Manager

Look for the line that says LISTENING . The number at the far right is the . The Visual Way (Task Manager): Open Task Manager and go to the Details tab.