Aria Operations for Logs Agent for Windows fails to upgrade due to failed install of older Agent version

Products

• VCF Operations/Automation (formerly VMware Aria Suite)

Issue/Introduction

When attempting to upgrade the Aria Operations for Logs Windows Agent, the upgrade utility fails to uninstall the previous version of Aria Operations for Logs Agent with the below error.

Environment

Aria Operations for Logs 8.18.x

Cause

This is due to a stale registry entry that references an older version of the Aria Operations for Logs Agent within the Windows Guest OS. 

Resolution

Before proceeding with the below resolution, please ensure that you take a backup of the registry.

Remove any entries that reference an older version of the Aria Operations for Logs agent within the registry and then reattempt the Agent upgrade. 

The references can be found in \HKLM\SOFTWARE\Classes\Installer\Products\

Additional Information

For more information on using the Windows registry, please see Microsoft KB-256986