Upgrading vCenter Server from 7 to 8 fails in Stage 1 with error "Failed to send the [VCTest..vmdk] to the host [X.X.X.X], please check the network connection"

Products

• VMware vSphere ESXi

Issue/Introduction

Upgrade vCenter from 7.x to 8.x fails with following error:

Verify the logs from Jump Server:

Path: C:\Users\Admin\AppData\Local\Temp\2\vcsaUiInstaller\ovftool-xxxx-xxxxx

YYYY-MM-DDTXX:XX:XX.XXXZ - info: output:ERROR
+ <Errors>
+ <Error>
+ <Type>ovftool.http.send</Type>
+ <LocalizedMsg>
+ Failed to send file [VCTest.vmdk] to the host [X.X.X.X], please check the network connection
+ </LocalizedMsg>
+ <Arg>
+ VCTest.vmdk
+ </Arg>
+ <Arg>
+ X.X.X.X
+ </Arg>
+ </Error>
+ </Errors>
YYYY-MM-DDTXX:XX:XX.XXXZ - info: output:RESULT

Environment

vCenter Server 7.x

Cause

The Jump Server was unable to establish a connection with the target ESXi host, which resulted in the failure to create the disk due to a network connectivity issue.

Resolution

Please use a virtual machine hosted on the same ESXi host to run the installer. Alternatively, you may use a different Jump Server, provided that it has proper network connectivity to the target ESXi host.