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

: Open VMware Workstation, go to Edit > Preferences > Shared VMs , click Change Settings , and change the port number or disable sharing. 3. Skype or Teams (Older Versions)

Identify the program name by running this command (replace [PID] with your actual number): tasklist /fi "pid eq [PID]" Use code with caution. Method B: Using PowerShell

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

Port 443 is a critical requirement for Veeam Backup & Replication. Veeam uses this port for secure communication, web services, and cloud integrations. When another application occupies port 443, Veeam installations or services will fail. : Open VMware Workstation, go to Edit >

What or PID showed up in your netstat search?

If replications continue to fail, check the Veeam Backup & Replication logs located by default at C:\ProgramData\Veeam\Backup . Look for specific connection errors that point to the exact IP and port Veeam is attempting to access.

The error message blocks upgrades and installations of Veeam Backup & Replication (VBR). Starting with Veeam v13 , the software introduces a hardcoded architectural requirement for TCP Port 443 . It uses this port to handle its modernized REST API gateway, web user interface components, and identity management services. Method B: Using PowerShell : Always install Veeam

If you are performing a fresh installation, Veeam allows you to specify the ports. If the system is already installed, changing the port is more complex and involves the registry or the Veeam Configuration backend.

Because Veeam v13 enforces a strict, unskippable validation check for port 443 during its installation routine, use this deployment strategy to guarantee success:

Option C — Move Veeam to a different port (use only if changing the other app is impossible) Veeam uses this port for secure communication, web

Veeam Backup & Replication uses various ports for communication between components, including the Veeam Backup Server, Proxy Servers, and Repository Servers. One of these ports is TCP 443, which is typically used for HTTPS traffic.

: Users on Reddit recommend running netstat -anob in an elevated command prompt to identify the specific process ID (PID) currently bound to port 443.

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