Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application 〈360p〉

Get-NetTCPConnection -LocalPort 443 | Select-Object -Property LocalAddress, LocalPort, State, OwningProcess Get-Process -Id (Get-NetTCPConnection -LocalPort 443).OwningProcess

: If you are using the Console (formerly Availability Console) rather than VBR itself, the port be changed via IIS Manager > Edit Bindings Infrastructure Segregation

netstat -ano | findstr :443

Major Issues After Upgrading to Veeam V13: Port 443 Conflict VisualSVN or Apache: Other web-based management tools

If you’re attempting to install or upgrade to , you may encounter a blocking error: "Required port 443 for Veeam Backup & Replication is occupied by another application." This happens because Veeam v13 now requires port 443 for its API Gateway and Web Service .

: VBR v13 introduces a REST-based web service that handles core management tasks and the modern Web UI. Identity Service

Web servers or management consoles (like WSUS or a local website) often bind to 443. VisualSVN or Apache: Other web-based management tools. 3. How to Resolve Since Veeam v13 currently has no supported method : Type netstat -aon | findstr :443 and press Enter

Use the command line to find out exactly what is currently using port 443 on your server.

: Type netstat -aon | findstr :443 and press Enter .

If the site on IIS is non-critical, shift its HTTPS binding to an alternative port (e.g., port 8443) via the IIS Manager console. If IIS is not required on your Veeam Backup server, open services.msc and stop/disable the World Wide Web Publishing Service . Culprit B: Microsoft Hyper-V Replication Services click Change Settings

If IIS is using 443, you must stop the Default Web Site or change its binding. Open . Expand Sites and select Default Web Site . Click Bindings in the right panel. Select the https binding and click Edit .

Port 443 is the industry standard for secure web traffic (HTTPS). Veeam Backup & Replication utilizes this port for several essential tasks:

Change the specified HTTPS port from 443 to an available alternative (e.g., 444 ).

By carefully planning your backup infrastructure and leveraging these diagnostic tools, you can resolve port conflicts quickly and maintain a resilient data protection environment.

Go to Edit > Preferences > Shared VMs , click Change Settings , and change the HTTPS port number. Strategy 3: Change the Veeam Backup & Replication Port