Required for the console, RESTful API, and modern user interfaces.
Sort by the column to find the number you discovered in Step 1. Right-click the process and select End process tree .
To find out which specific application is currently using port 443 on your Windows server, use one of the following methods:
Troubleshooting the Error: "Required port 443 for Veeam Backup & Replication is occupied by another application" Required for the console, RESTful API, and modern
If you cannot move the conflicting application (for example, if this is a strictly locked-down management server), you can tell Veeam to use a different port during installation or configuration.
Update the replica settings for each VM to match this new port Windows Remote Management (WinRM)
Is this shared with vCenter or an IIS web server? To find out which specific application is currently
Microsoft Internet Information Services (IIS) is one of the most common culprits. Many organizations host their internal websites on the same server, and IIS binds to port 443 by default.
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He rushed back to his desk in the other room, the wheels of his chair squeaking loudly. He pulled up the Veeam console. The job was set to "Idle". He right-clicked the failed job. Many organizations host their internal websites on the
Major Issues After Upgrading to Veeam V13: Port 443 Conflict 11 Dec 2025 —
How to find the right ports under Veeam - Starline Computer GmbH
To resolve the conflict, you must first identify which process is currently using port 443.