Hi, George!
>You have to use a FoxPro Dynamic Link Library (FLL extension) with SET LIBRARY TO...In order to access the functions in a regular Windows DLL, you have to use the DECLARE syntax referencing the individual function names and the DLL file name.

Thank you for an answer.
I did not write that I control about 20 computers and this is a problem of only one computer. Everywhere it's work correct.