Hi Simon,
Thank you very much for your input. Since I already told the Citrix engineer that the app will need 2 gig, I won't go back and tell them otherwise. But I will look into what you describe as "VFP functions to define the maximum foreground and background ram" and learn how to do it.

>Hi
>
>I use Terminal Services all the time and I have never had a VFP application use 2gig of ram. Under Windows Server 2016 I find that once you reach ~ 700 meg of ram the application will report there is not enough ram even if there is lots available. So I simply use the VFP functions to define the maximum foreground and background ram and I have had no troubles since. I often have 20-30 users running VFP applications on servers with 8-16 gig of ram depending on the server. The servers all use SDD/NVMe drives which helps a lot with performance.
>
>Simon
>
>>Me again :)
>>
>>I have confirmed from the Citrix engineer that (as Dragan correctly wrote) each user of my application will have a separate memory space (hence each user will have a user ID and password). And I wrote to the Citrix engineer that my app needs a minimum of 2 GB of RAM (just a guess on my part :)).
>>But now I am thinking. If 20 users log into the Citrix server to use my app and each is allocated 2 GB or RAM, would they (Citrix engineers) need to have the server with a minimum of 40 GB of RAM?