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

IIS or Apache instances running on the same machine. Solutions and Workarounds

net stop W3SVC sc config W3SVC start= disabled

He navigated to the VMware Workstation installation directory. He needed to edit the config.ini file located in the application data folder, or better yet, change the service configuration via the GUI if he could load it. He tried to open the VMware console, but it was sluggish.

This article provides a complete guide to understanding, diagnosing, and permanently resolving this port conflict. IIS or Apache instances running on the same machine

Some endpoint detection and response (EDR) or antivirus tools run local web servers for console management that hijack port 443.

Starting with newer architectures, Veeam heavily integrates its unified management console, REST API gateway, and Identity Service via standard HTTPS. The new setup connects natively over port 443 to handle identity verification and web certificates [1.18].

To align with modern web security practices, Veeam hardcoded for these critical identity and API management layers. He tried to open the VMware console, but it was sluggish

This guide breaks down precisely why this happens, how to identify the true culprit, and the steps to achieve a stable, conflict-free Veeam environment.

This error typically presents during installation, component upgrades, or when pushing agent updates, halting the process and requiring immediate resolution. Why Veeam Needs Port 443

Change the "Default Web Site" binding from 443 to another port (like 4443) via the IIS Manager. how to identify the true culprit

Major Issues After Upgrading to Veeam V13: Port 443 Conflict

netstat -ano | findstr :443

Security teams and engineers from the Veeam Community Forums strongly advise adhering to the following structural principles to prevent these issues:

Once the upgrade completes, you may attempt to re-enable the third-party service on a different port. Registry Fix (Veeam Agents only) For standalone Veeam Agents

If you cannot modify the conflicting application, change the port Veeam uses. Open the .