Required Port 443 For Veeam Backup Replication Is Occupied By Another Application Link -

There are two main ways to resolve this: change the port for the conflicting application (Recommended) or configure Veeam to use a different port.

Go to Edit > Preferences > Shared VMs and change the port or disable sharing. Option B: Change Veeam’s Default Port There are two main ways to resolve this:

If the conflicting application allows port reconfiguration (e.g., changing the HTTPS binding in IIS), move it to a different port to allow Veeam to claim 443. Port 443 is the standard for HTTPS, making

Port 443 is the standard for HTTPS, making it a high-traffic area. Frequent "squatters" include: Hyper-V Replication: By default, Hyper-V uses 443 for its replication traffic. IIS (Internet Information Services): IIS (Internet Information Services)

: If your backup server also acts as a Hyper-V replica server, it often reserves port 443. IIS (Internet Information Services)