Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application [better] ⚡ Free
Look for a DWORD value named RestApiPort or ServicePort (refer to specific Veeam version documentation for your exact architecture).
Rerun your installer, upgrade wizard, or restart the failed Veeam services via services.msc . Best Practice Recommendation
Resolving Veeam Error: "Required port 443 for Veeam Backup & Replication is occupied by another application"
If installed on the same machine, VMware management services will contest this port. Look for a DWORD value named RestApiPort or
Open IIS Manager, select the Default Web Site, click Bindings in the right-hand panel, edit the HTTPS binding, and change the port from 443 to another number.
Since port 443 is often required and hardcoded for the Veeam Web service/API Gateway in v13, you generally have two options: reconfigure the other application or temporarily stop it during the upgrade. Option A: Reconfigure the Conflicting Application
Look for rows showing LISTENING . The number at the far right of that row is the . Match the PID to an actual application name by running: tasklist | findstr [Insert_PID_Here] Use code with caution. Using PowerShell For a cleaner, direct output, run this PowerShell command: powershell Open IIS Manager, select the Default Web Site,
Click the column header to sort the numbers numerically.
: Hosting a local corporate website, intranet portal, or management console.
Veeam Backup & Replication is a popular data backup and recovery solution used by many organizations to protect their critical data. However, during the installation or configuration process, users may encounter an error message indicating that the required port 443 for Veeam Backup & Replication is occupied by another application. In this article, we will explore the causes of this issue, its impact on Veeam Backup & Replication, and provide step-by-step instructions on how to resolve the problem. The number at the far right of that row is the
Knowing that port 443 is used by many services makes it easier to guess where the conflict might come from. However, you should never guess; you must identify the exact process. Common offenders include:
: In current builds of v13 (specifically v13.0.1.180 and newer), there is no supported method to change this port within the Veeam configuration. Veeam Community Resource Hub Resolving Port Conflicts
Look for rows showing LISTENING . The number at the far right of that row is the . Note this number down. Tracing the PID to a Process Name
Suggested success metrics