TCP 0.0.0.0:443 0.0.0.0:0 LISTENING 1234 TCP [::]:443 [::]:0 LISTENING 1234
The default Microsoft web server often runs on port 443 if HTTPS sites are configured.
Port 443 is the standard TCP port used for HTTPS (secure web traffic). Veeam requires this port for various components—most notably the and the Veeam Backup Service on the backup repository—to enable secure communication between the console, the server, and managed agents.
The name of the you discovered using netstat . The name of the you discovered using netstat
Communicates with VMware vSphere, Microsoft Azure, AWS, and secure cloud repositories.
Based on the identified process:
Major Issues After Upgrading to Veeam V13: Port 443 Conflict and managed agents.
: Sometimes uses 443 for its sharing features. 3. Resolution Steps
Because Veeam v13 does not natively allow you to change its own Web Service port during upgrade, you must use one of the following methods to clear the conflict.
Which and Veeam version you are currently running. The name of the you discovered using netstat
If Veeam is already installed and an update or a new software installation broke the configuration, you can modify the registry.
This guide provides a step-by-step walkthrough to identify the conflicting application and free up Port 443 so your Veeam infrastructure can run smoothly. Step 1: Identify the Conflicting Application
Once you have the PID (for example, 4124 ), you need to find out what software it belongs to. tasklist /fi "pid eq 4124" Use code with caution. Via Task Manager: Press Ctrl + Shift + Esc to open Task Manager. Go to the Details tab. Click the PID column header to sort numerically. Locate your target PID to see the exact executable name. Common Culprits