>Applicaton is running in Windows workstation.
>
>Another user logs into this computer using RDP.
>
>After that running application crashes with message like
>
>Visual FoxPro caused and exception and will terminate.
>Click OK to send error information ..
>
>How to fix or find reason of the issue ?
>
>If application is started from RDP in runs OK.
>
>This occurs in once system only.

A Windows workstation can support only one RDP session at a time.

Suppose user X logs on to the workstation using its keyboard and mouse (console session), and starts your VFP app.

Now, user Y logs on to the same workstation remotely via RDP. Depending on the version of the RDP client they're using and their privileges, they may or may not get a warning that user X is still logged on to the workstation. If user Y chooses to continue to log on (or doesn't get a warning), user X's session will be forcibly closed. Any apps user X may have running will be terminated as if the machine was being shut down. I don't know what sort of errors that will create.