>>
>>From your description I can't see how "installing MS game" may relate to what you call "my system".
>>
>>Let me repeat what I understood. You have what you call "my system" that is supposed to work for several clients.
>>When clients work with "your system" (and it is written in VFP), they receive error message "No disk. Retry, cancel, Continue?"
>>
>>If the above is correct, then you should investigate on what line of your code it happened.
>>
>>Good Luck
>
>Yury:
>
>I got very angry that time with Microsoft's answer. So I don't waste opportunity to remember that episode.
>
>The same error now appears on one of MY system. No error on code, I can assure. Your reply remind me Microsoft's assistance...
>
>Thank you.
>
> Héctor

Anger is not a good adviser.
I understand your pain, but your respond to me is not adequate considering I am the only one for now who gave you a hand

To get help you probably need to explain in greater details when or after what user action the message appears

Good Luck