Everything is running on the Citrix server. The only software running on the local computer is the Citrix client.

As I stated before, local files would be files the user would need to import/export from your app. You will need to take a few extra steps to make sure they are pointing to a drive on their computer, rather then the server.

PF

>Perry,
>
>Thank you for your message. The only local files my application should see are the VFP 9 run-time DLLs. Therefore I wonder, do I need to install VFP 9 run-time DLLs on the local machine or only on the Citrix Server?
>
>>Almost everything from the point of view of your app will be identical on Citrix. The one area where you would have an issue is external file opening/saving.
>>
>>You will need to find out how that Citrix installation sees the users local drives. And provide a method for opening files on a local drive, and saving to a local drive.
>>
>>PF
>>
>>>I know nothing about Citrix so my question is very naive but I need to clarify something.
>>>
>>>In my VFP application I have a routine at the top of the application where the program opens a .vcx file (mysettings.vcx) where one of the setting indicates if the program is single user or multi-user.
>>>
>>>Then if the program is single user, the application tries to open a semaphore file (dummy text file) as following:
>>>
>>>

>>>hInUseSemaphore = fopen( cSemaFile, iif( lMultiUserLicense, 0, 2  ))
>>>
>>>if hInUseSemaphore = -1 and !lMultiUserLicense   && Single User Ver
>>>   =messagebox("Cannot load program.")
>>>   return .F.
>>>endif
>>>

>>>
>>>Will the above work if a user is loading the application via Citrix?
>>>
>>>Thank you.