ENM 8.3 SEEG.exe error while trying to refresh tags, dll file has already loaded from a different location

Issue
After applying a patch to ENM, user cannot refresh tags. The error message suggests a service is not running however all services are running. In the ENM event log the following message is included
"API restriction: The assembly 'file:///C:\Program Files (x86)\Schneider Electric\StruxureWare Solutions\Event Gathering Service\[some file name].dll' has already loaded from a different location. It cannot be loaded from a new location within the same app domain.

Product Line

Power Monitoring Expert 7.2

Power Monitoring Expert 8.x

Power Monitoring Expert 9.x

Power Monitoring Expert 2021

Power Monitoring Expert 2022

Power Monitoring Expert 2023

Power Monitoring Expert 2024

Environment
Applying patch to update dll file

Resolution
The likely cause is because the updated dll and original dll (with a different name) are in the same folder. Move the old dll file to a new location and restart the Event Gathering Service.

Released for: Schneider Electric Canada