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.