Since Veeam v13’s use of port 443 is currently required for the installation to finish, you have two primary options:
This error typically occurs during an upgrade to or newer, where port 443 is now a hardcoded requirement for the Veeam Web Service and API Gateway. 1. Identify the Conflicting Application
user wants a long, detailed article about the error "required port 443 for veeam backup & replication is occupied by another application". I need to provide a comprehensive guide covering causes, identification, resolution, and best practices. I'll need to search for official documentation, common causes, resolution steps, and best practices. To ensure comprehensive coverage, I will conduct multiple targeted searches. search results show various resources. I need to gather detailed information from these pages. I'll open the most relevant ones. search results provide a good amount of information. I will also search for more general best practices and troubleshooting. have gathered sufficient information to write a comprehensive article. The article will cover the error overview, why port 443 is critical, common causes, how to identify the conflicting application, resolution steps, best practices, advanced scenarios, and a conclusion. I will cite the relevant sources. Now, I will write the article. 443 is one of the most critical yet contested ports in Windows networking. Its use is standard for any HTTPS-based communication, including for Veeam Backup & Replication. It also plays a central role in modern Veeam versions, particularly for its Web UI, API Gateway, and communication with virtualization hosts. Since Veeam v13’s use of port 443 is
If you are still encountering issues after trying these steps, consult the Veeam community forums or open a support ticket with Veeam directly. With the right approach and a bit of persistence, you will have Veeam Backup & Replication running smoothly on port 443 in no time.
Get- Process -Id (Get-NetTCPConnection -LocalPort 443 ).OwningProcess Use code with caution. Copied to clipboard I need to provide a comprehensive guide covering
: In some cases, the WinRM service or WS-Management must be stopped to allow the Veeam console to load correctly. Option B: Temporary Stop for Upgrade Veeam B&R 13 Change Web Service Port 443
If you cannot move the other application, you can configure Veeam to use a different port for its service communication. search results show various resources
: Open Command Prompt or PowerShell as an Administrator.
When upgrading to Veeam Backup & Replication (VBR) v13 , many users encounter a critical installation block:
. Unlike previous versions, there is currently no supported way to change this port within the Veeam configuration once the conflict is detected. Veeam Community Resource Hub
