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

Some enterprise security suites host local web consoles on port 443. Step 2: Resolve the Port Conflict

by opening Task Manager , going to the Details tab, and sorting by the PID column. Common Conflicting Applications

to change the port 443 requirement within Veeam v13. Instead, you must reconfigure or move the conflicting application. Hyper-V Replication

Select the site occupying the port (usually Default Web Site ). Some enterprise security suites host local web consoles

If you are using a modern version of Veeam (v13 or later), treat port 443 as a dedicated resource for Veeam to avoid compatibility blocks. For older versions, retaining the flexibility to assign custom ports is often the simplest path to a stable deployment. If you are unable to resolve the conflict on your own, with the details of the conflicting service you identified.

Back up your registry and Veeam configuration database before making manual edits. Open regedit via the Windows Run dialog.

: If the VBR server is also a Hyper-V Replica server, Hyper-V likely owns port 443. : Change the Hyper-V Replication port (e.g., to 444) in Hyper-V Settings Replication Configuration . You must also update this on each replica VM. IIS / Web Servers Instead, you must reconfigure or move the conflicting

Ensure internal Windows firewalls are configured to allow Veeam traffic explicitly rather than opening ports globally.

Right-click and (or Restart ) the Veeam Backup Service .

You can change the port during the Veeam installation process. When the installer asks for ports, type a different number for the secure web connection. If Veeam is already installed, you may need to modify the registry or run a repair installation to safely change its default communication ports. Step 4: Restart Veeam Services For older versions, retaining the flexibility to assign

Then, find the process name:

Go to Edit > Preferences > Shared VMs , choose Disable Sharing , change the port number, and re-enable sharing. Step 3: Verify Port Availability and Resume Veeam

Troubleshooting "Required port 443 for Veeam Backup & Replication is occupied by another application"

One of the most frustrating errors encountered during the installation or upgrade of Veeam Backup & Replication (VBR)—particularly in newer versions like v13—is:

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