Hi Viv thanks for replying
This is a Windows Forms app, running on Sql Server

Regards,
Gerard


>>Hi.
>>Just looking for ideas/best practise in processing multiple users
>>Our app can have multiple users logging in (Maintained in a Sql Database)
>>App using Sql Server, C# and can be run from Lan PC or Rdp session or Stand alone
>>
>>
>>Ideally, don't want the same user logging in twice, but how do we determine if:
>>A user is really in the system
>> v/s
>> A user might have logged in but there was a power cut and Application still thinks they are logged in but they have in fact been kicked out
>>
>>If there is a reliable way of telling that a User is in fact in the system, then at login point we can prevent access by the same user id
>
>You've got this under 'Web' application so I assume this is ASP.NET ?
>Are you using Forms Authentication ?