Hi @pierre-jean.campigotto, AdfinX Real-time (rtx.dll) is a 32-bit only library, so it will not work. You can use .NET Data API for real-time and time series instead.

Here is the link to the package: https://www.nuget.org/packages/ThomsonReuters.Desktop.SDK.DataAccess.Signed.x64/

Here is the link to the tutorial:

https://developers.refinitiv.com/en/api-catalog/eikon/-net-apis-for-use-in-custom-applications/tutorials#real-time-data

I have a tangentially related question. I am programming in C++ and I have to use a x64 dll. Are there any samples for C++ in the .net api? I am not a C# programmer.

Thanks in advance