A problem occurred while getting data from the source vCenter Server - Network related

Products

• VMware vCenter Server

Issue/Introduction

During vCenter upgrade the following error shows:

vcenter upgrade error

Environment

vCenter 7.x and 8.x

 

Cause

Guest OS (Windows) installer log shows:

error: sourcePreCheck: error in getting source Info: Could not get response from url https://<host IP or name>:443/guestFile?id=&token=#######: Error: connect ETIMEDOUT <host IP or name>:443

Resolution

To verify required communication ports for the vCenter upgrade:

TCP port 443: This is the main HTTPS port used by vCenter Server for web client communication and API access. It must be open between the upgrade machine, the current vCenter, and ESXi hosts.

TCP/UDP port 902: Used for communication between vCenter Server and the ESXi hosts for management and VM console traffic.

TCP port 80: Used for HTTP redirection to HTTPS (port 443) during communications.

and enable blocked ports (e.g. firewall) as needed