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

If you want to dive deeper into this configuration, tell me: What did your tasklist command reveal?

Leftover web server stacks from third-party monitoring tools.

Rerun your installer, upgrade wizard, or restart the failed Veeam services via services.msc . Best Practice Recommendation If you want to dive deeper into this

Are you currently ?

In , port 443 is a hardcoded requirement for the REST API/Web UI service and cannot be changed through any supported method. If this port is occupied, the VBR services will fail to bind, and your installation or upgrade will be blocked. Best Practice Recommendation Are you currently

If the command returns no output (or only shows Veeam services starting up), the port is successfully cleared.

After some discussion with the team, they decided to move the Acme Secure Gateway to a different server and change its configuration to use a different port. They also updated the Veeam configuration to use a new port, and everything was back to normal. If the command returns no output (or only

Get-Service Veeam* | Where-Object $_.Status -eq 'Running'

Change the default port from 443 to your newly designated port (e.g., 8443 ).

For VMware Workstation, navigate to Preferences > Shared VMs , click Change Settings , disable sharing, alter the port number, and re-enable it. For Apache or Nginx, modify their respective httpd.conf or nginx.conf files to change the listen 443 directive. Culprit D: Security and Monitoring Agents

Open IIS Manager -> Expand Sites -> Right-click the website using the port -> Select Bindings -> Edit the HTTPS binding and change port 443 to another integer.