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

: Open Task Manager, go to the Details tab, and find the application matching that PID. 2. Common Conflicts and Solutions

Some admins report success by temporarily stopping the conflicting service to complete the Veeam upgrade. However, the Veeam Web Service may fail to start afterward if the original application resumes control of port 443. Dedicated Infrastructure : Open Task Manager, go to the Details

Port 443 is the standard port for secure web traffic (HTTPS). In a Veeam environment, it is used for several critical functions: However, the Veeam Web Service may fail to

: Run the following command: netstat -ano | findstr :443 : Open Task Manager

Veeam uses Port 443 for secure communication. Changing Veeam's port requires reconfiguring all managed servers and components to trust the new port, which is complex. It is usually easier to move the other application off port 443.

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