ArchiOffice/EngineerOffice/Web Suite is not connecting to the database server. It displays an error:
Arithmetic Operation resulted in an overflow.
This may occur because of WebCompanion of Lavasoft, a browser add-on used for web protection.
You have two options to resolve this issue:
1. Turn off Lavasoft WebCompanion according to their guidelines: https://www.adaware.com/support
2. Stop the service LavasoftTcpService from Services.msc or by uninstalling the add-on from your Control Panel > Programs and Features.