Connection problem on CtAPI.dll with a VB.net application on Citect 2018 R2

Hi Pascal , these files have always been mandatory. Check in your VB code if it is referring to a folder location elsewhere on your machine. It is typical that customers just drop the ctapi.dll dependencies into the same folder where their client application is. It is now easier as we package exactly what you want into a zip and place it with the installation media.
There is a new mode for ctOpen to enable encrypted communications. See the online help for the topic "ctOpen".

Hi Pascal , these files have always been mandatory. Check in your VB code if it is referring to a folder location elsewhere on your machine. It is typical that customers just drop the ctapi.dll dependencies into the same folder where their client application is. It is now easier as we package exactly what you want into a zip and place it with the installation media.
There is a new mode for ctOpen to enable encrypted communications. See the online help for the topic "ctOpen".