Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link Jun 2026

Update the in each VM's replication settings to match the new port to avoid re-replicating data. Stop and Disable Conflicting Services :

Elias, the senior systems engineer, gripped his coffee mug like a lifeline. The Veeam Backup & Replication console was displaying a sea of red. The job—dubbed "Critical-VMs-Offsite"—had failed. Again.

Before you can fix the conflict, you must pinpoint exactly which process is monopolizing Port 443.

: Connecting securely to VMware vSphere environments. Update the in each VM's replication settings to

Once you identify the process, choose a mitigation strategy below based on the conflicting application. Scenario A: Hyper-V Replication Server Conflict

He changed the value to 8443 . Then, he opened the Services console, located the VMware Workstation Server service, and hit .

VMware Workstation includes a virtual machine sharing feature that defaults to port 443: Open . Navigate to Edit > Preferences > Shared VMs . Click Change Settings , then click Disable Sharing . The job—dubbed "Critical-VMs-Offsite"—had failed

on your Veeam Backup server.

: Always install Veeam Backup & Replication on a dedicated server. Avoid co-hosting it with web servers, domain controllers, or database servers.

: If the VBR server also acts as a Hyper-V Replica server, it may already be using 443 for HTTPS replication. : Connecting securely to VMware vSphere environments

Historically, Veeam used port 9392 for its internal backup service communication. However, starting with , Veeam shifted to a secure modern web architecture featuring an embedded REST API Gateway and an upgraded web management service.

: After upgrading to Veeam v13, the Veeam Web Service will still require port 443 to function. If you restart the conflicting service, Veeam will fail to work properly [12†L44-L47][13†L16-L19].

If a temporary or non-essential application is hogging the port, kill it via Command Prompt using the PID you found in step 1: taskkill /PID /F Use code with caution. 4. Restart Veeam Services