Thanks all Guys!!! As all of you Know that a Server isnt mean to Shut Down, But keep Running. Before Giving Such type of error I had Installed Escan Antivirus Workstation Server Suite I am Using Intel P4 Machine 915 Gig. Motherboard, 1 GB Ram, all Clients are Windows XP with Escan Client Installed. Also While Running Escan Antivirus Full System Scan It Would Give me Error Like This and the Scan Terminated Application popup: mwavscan.com - Application Error : The instruction at "0x00465964" referenced memory at "0x38643869". The memory could not be "read". Click on OK to terminate the program Click on CANCEL to debug the program Can This be the problem with Antivirus????