Required Port 443 For Veeam Backup & Replication - Is Occupied By Another Application ~repack~

Once you've made your changes, it's essential to verify that port 443 is now listening for Veeam. You can run the netstat -ano | findstr :443 command again. This time, the process listening on port 443 should be a Veeam-related service, such as Veeam.Backup.Svc.exe or Veeam.WebSvc.exe .

The error "Required port 443 for Veeam Backup & Replication is occupied by another application" is a classic collision between modern web-based services and Veeam's deep reliance on HTTPS for its core services. While intimidating at first glance, it is almost always resolvable by methodically identifying the offending process—most often IIS—and either moving it to a different port or eliminating it entirely.

Since Veeam v13 does not currently support changing the web service port via the installer, you must resolve the conflict at the source. Solution A: Reconfigure the Competing Service

Advance through the wizard to the credentials/connection step. Once you've made your changes, it's essential to

If the software was already upgraded but the web service crashed, navigate to Windows Services ( services.msc ) and manually start the Veeam Backup REST Service ( VeeamBackupRESTSvc ). Summary of Alternative Setup Strategy

Go to , locate the specified HTTPS port, and shift it from 443 to a different number (e.g., 4443 ).

The best time to solve a port conflict is before it happens. Here are the recommended best practices for planning a Veeam deployment: The error "Required port 443 for Veeam Backup

Several applications frequently conflict with Veeam over Port 443. Common examples include:

(For example, if the PID is 4120, you will see something like System , w3wp.exe (IIS), or vmms.exe (Hyper-V)). Step-by-Step Resolution Strategies

Open IIS Manager , expand your sites, and select the Default Web Site . Click Bindings in the right-hand panel. Edit the HTTPS binding and change the port from 443 to an unused port (e.g., 4443), or stop the website if it is unused. 2. VMware Workstation / vCenter Server particularly for its Web UI

Because Veeam v13 does not natively allow you to change its own Web Service port during upgrade, you must use one of the following methods to clear the conflict.

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