Required Port 443 For Veeam Backup & Replication Is Occupied By Another Application Better Access

Major Issues After Upgrading to Veeam V13: Port 443 Conflict

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

Complete the wizard to apply changes. Ensure your network firewalls allow traffic on this new port. Step 4: Verify the Resolution

user wants a long article about troubleshooting the error "required port 443 for veeam backup & replication is occupied by another application". I need to search for comprehensive information on this topic. I will follow the search plan outlined in the hint. search results provide a good starting point. I need to gather more specific information on troubleshooting steps and common causes. I'll open several relevant results to gather detailed information. search results provide a wealth of information. I will structure the article with an introduction, sections on why port 443 is critical, common causes, step-by-step diagnostics, resolution strategies, Veeam 13 updates, best practices for prevention, and a conclusion. I'll cite the relevant sources. Now I'll write the article. conflicts are among the most common and disruptive issues when setting up or upgrading Veeam Backup & Replication, and few cause more immediate frustration than seeing the error that port 443 is already occupied. For many administrators, the issue is frequently discovered during a critical upgrade window, often when attempting to move to version 13, where port 443 has become a mandatory requirement. This guide will walk you through exactly why this error occurs, how to diagnose the conflicting application, and the precise steps you need to follow to resolve the conflict and get Veeam functioning properly. Major Issues After Upgrading to Veeam V13: Port

Once port 443 is free, restart Veeam so it can claim the port. Open ( services.msc ). Scroll down to the Veeam services. Right-click Veeam Backup Service and click Restart .

Peaceful coexistence. Two different universes sharing the same integer, separated only by a virtual wire.

Go to Edit > Preferences > Shared VMs , click Change Settings , and change the HTTPS port number. Strategy 3: Change the Veeam Backup & Replication Port Click Bindings on the right side

Connects data labs, multi-backup server federations, and self-service portals.

Are you seeing this error during a or did it suddenly appear on an existing server ?

Open IIS Manager, select the Default Web Site, click Bindings in the right-hand panel, edit the HTTPS binding, and change the port from 443 to another number. Ensure your network firewalls allow traffic on this new port

Tell you (besides IIS) often conflict Show you how to use PowerShell to find the process Provide steps to change the port for specific applications Let me know how you'd like to proceed with the fix .

Depending on the application returned by your query, choose the corresponding resolution pathway below.