If the conflicting application is unnecessary on your Veeam backup server (e.g., IIS or VMware Workstation), stop it. Press Win + R , type services.msc , and press .
Minimal implementation roadmap (phased)
Once the conflicting application has been identified, choose the most appropriate resolution path based on your environment and version of Veeam. If the conflicting application is unnecessary on your
The default web server on Windows Server often hosts an HTTPS site binding to 443.
Common culprits include Microsoft IIS, Skype, Apache, or anti-virus software. Step 3: Fix the Conflict The default web server on Windows Server often
In Windows Server environments, the most common applications that preemptively occupy port 443 include:
If you need the other program, change its port. For example, if Windows IIS is using port 443: Open the . Click on your website. Click Bindings on the right side. Change port 443 to a new number like 8443 . Option C: Change the Veeam Port For example, if Windows IIS is using port 443: Open the
If you must keep the conflicting application running on the same server, change its settings to use a different port (such as 444 or 8443).
Before you can fix the issue, you must find out exactly which process is currently listening on port 443. Using Command Prompt (Netstat)
: Veeam itself "does not expect the backup server to be shared with 3rd party apps". For production environments, always install Veeam Backup & Replication on a server that does not run IIS, Skype, or any other application that might need port 443.
: Hosting a local corporate website, intranet portal, or management console.