Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link !!hot!! Jun 2026
To resolve the issue of port 443 being occupied by another application, follow these steps:
| Problem | Quick Fix | | :--- | :--- | | PID 4 (System) / HTTP.SYS reservation | netsh http delete urlacl url=https://+:443/ | | IIS running | Change Default Web Site’s HTTPS binding to 8443 | | SQL SSRS | Change Reporting Services port to 4443 | | RD Gateway | Change SSL port in RD Gateway Manager | | Docker / Containers | Stop docker or com.docker.service | | Antivirus web filter | Disable SSL intercept for the Veeam server IP | | No other option | Change Veeam’s own HttpPort registry key to 8443 |
He made a mental note to have a very serious conversation with Kevin about lab hygiene on Monday morning. But for now, he watched the green progress bar crawl across the screen, the data flowing safely through the reclaimed Port 443, securing the company's future one megabyte at a time.
He clicked the "Details" link, his eyes scanning the error log until they locked onto the fatal sentence:
: Stop the conflicting service long enough to complete the Veeam upgrade. Permanent Fix : To resolve the issue of port 443 being
tasklist /svc /FI "PID eq 1234"
After making changes, confirm that Veeam successfully claims the port or that the conflict is cleared. Restart the Veeam Backup Service via services.msc . Run the netstat command again: netstat -ano | findstr :443 Use code with caution.
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
He opened the services.msc snap-in. Sure enough, the VMware Workstation Server service was running. But who installed VMware Workstation on a production backup repository? Permanent Fix : tasklist /svc /FI "PID eq
He changed the value to 8443 . Then, he opened the Services console, located the VMware Workstation Server service, and hit .
Assign a secondary IP address to the server hardware. Bind the third-party application explicitly to IP_A:443 and allow Veeam to bind to IP_B:443 .
: Web servers hosted on the same machine often default to 443 for HTTPS.
Your action plan must be based on the outcome of your investigation. This public link is valid for 7 days
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later.
If you cannot change the other application, you may need to change the port used by the Veeam Web Service, though this can make management complex.
[Your Name/Team] Date: [Current Date] Version: 1.0
Web servers hosted on the same operating system regularly bind port 443 for default websites.
: Sometimes causes conflicts that prevent the VBR console from loading.