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

Before you can fix the port conflict, you need to identify exactly which process is using it. Follow these diagnostic steps:

: Open Task Manager ( Ctrl + Shift + Esc ), go to the "Details" tab, and sort by the "PID" column. Find the PID you noted from the netstat output. The corresponding "Name" column will tell you the executable file (e.g., svchost.exe , Skype.exe , httpd.exe ). This executable is the application conflicting with Veeam. If the process is svchost.exe , you may need to inspect the services running under that host to pinpoint the exact culprit.

Process ID 4428. She pulled up Task Manager. Right-clicked the PID column. Sorted.

If netstat shows the Veeam Backup Service (e.g., Veeam.Backup.Service.exe ) on port 443 but the installer still complains, you may have a stale installation. In that case: Before you can fix the port conflict, you

[Info] HTTPS listener started on 172.18.0.10:443. Ready to serve.

Sometimes, the port is reserved by the system’s HTTP driver ( http.sys ).

Applications with their own web-based management consoles frequently occupy this port. Resolution Strategies Veeam B&R 13 Change Web Service Port 443 The corresponding "Name" column will tell you the

Authentication and traffic routing for the Veeam self-service web UI and REST API. Step 1: Identify Which Application is Using Port 443

Web servers or management consoles (like WSUS or a local website) often bind to 443. VisualSVN or Apache: Other web-based management tools. 3. How to Resolve Since Veeam v13 currently has no supported method

Port 443 is the standard port for secure web traffic (HTTPS). In a Veeam environment, it is used for several critical functions: Process ID 4428

Security agents (e.g., Datadog), VMware Workstation services, or communication tools like Skype. How to Find the Blocker

If you need the conflicting application to remain active, change its HTTPS port to something else (like 4443 or 8443) to leave 443 open for Veeam.