Mail Viewer not opening mail : Unhandled NET. FRAMEWORK

Created by Jason Kumar, Modified on Fri, 11 Jul, 2025 at 9:10 AM by Jason Kumar

This issue occurs due to residual files left in the APPData that need to be deleted.

Step 1: Please uninstall LG mail viewer via Add or Remove Programs.

Click the uninstall button below:

Step 2: On your Cloud, press Windows + R and paste the text below into the 'Run' text box.

%localappdata%

Then click 'OK'

Step 3: Then delete the 2 folders below:

Step 4: Copy and install the latest MailViewer app which is found here:
S:\25. LGEAP\New 25.LGEAP\1.Software\2.LG\LG Mailviewer Setup

Kind Regards,