Hi ,We are using Exchange 2000 , and using instant messagers extensivly. Now our users are getting signing out automatically after sometime. I need to run command ( ipconfig/flushdns ipconfig/releasedns ) regularly and then it will start after a period of time .What could be the reason ...please help to resolve this issue....AkshaAkasha

check if this happening 1. To some users or all the users.2. All the subnets or some of the subnets on the LAN3. Run a netmon from problematic machine and see if there are data packets.4. Check the DNS on the client machines and see if they are correctly pointing,Raj

Hi ,Thanks for your kind reply ,I do have only one class C network domain , this is happening to magor users in my domain . There is no packet loss on any of the system and DNs is already point to the proper server.Please help me to resolve this .....Akasha

Is there any related event in the application log after reproducing the issue? Please check if there’s any related info in the IIS log for the problematic users after reproducing the issue The location of IIS logs is: Start-> Run->Logfiles. In the jumped window, enter “W3SVC1” folder and get the logs Resources: Instant Messaging Users Are Automatically DisconnectedJames Luo TechNet Subscriber Support (http://technet.microsoft.com/en-us/subscriptions/ms788697.aspx) If you have any feedback on our support, please contact tngfb@microsoft.com

Hi ,Thanks for your great support...I check my Event Logs but in event viewer there are not any error logs e.g 403 - Access Forbidden ..I check IIS log files in this log i found something strange like this .. "SUBSCRIBE /instmsg/aliases/john - 200 -"..I tried to google and found it something related to authentication ...but my all the PC are the member of domain ..we are using AD and all users are having a valid account and they arer logging with there user name and password.I am having a doubt about licencing mode as per microsoft site..This behavior can occur if your Exchange Instant Messaging server's licensing mode is set to Per Server mode, which means that a limited number of concurrent connections are permitted at a single time. Because Exchange Instant Messaging uses the Microsoft Internet Information Services (IIS) 5.0 service users may experience the symptoms described in the "Symptoms" section, if the number of concurrent connections is reachedso how to check my current server mode ..plese help ...Thanks once again...Akasha

Hi , please help me ...suggest some guidelines...Thanks,Akasha