DLO Agent - Pop up "Outlook is not set as a default mail client" or "There is no email program associated to perform the requested action" is displayed while launching DLO Agent.

Problem

When DLO Agent is launched, one of the following error pop up message is displayed:

Error Message

"Outlook is not the default mail client"

Or

"There is no email program associated to perform the requested action"

Cause

During the Push installation of the DLO Agent, 32-bit DLO agent is installed instead of 64-bit due to the old registry keys of Outlook (32-bit) present, even if current Outlook installation is 64-bit.

Registry Path: HKLM\Software\WOW6432Node\Microsoft\Office

Hence during Push installation of the DLO Agent, 32-bit DLO Agent is installed instead of 64-bit.

Solution

1.  Check if the bitness of Outlook and DLO agent matches, detailed steps mentioned in article: DLO: Troubleshooting PST backup issues

2. Manually Install the DLO Agent in Client machine by running the setup.exe file from "\\DLOServer\DLOAgent" folder path and confirm if Outlook and DLO agent bitness matches.

3.  Re-launch DLO agent.