One of my server hosting Hub and Client Access is having occasional restart the Even details are as follows:- Please send me a reason for this kind of restart. Event Type: Information Event Source: USER32 Event Category: None Event ID: 1074 Date: 11/24/2011 Time: 7:00:00 AM User: NTDOMAIN\Administrator Computer: EXCHHTCA Description: The process winlogon.exe has initiated the restart of computer EXCHHTCA on behalf of user NTDOMAIN\Administrator for the following reason: No title for this reason could be found Reason Code: 0x840000ff Shutdown Type: restart Comment: For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: ff 00 00 84 ÿ..

I would post in the server forum - http://social.technet.microsoft.com/Forums/en-US/category/windowsserver That event ID indicates NTDOMAIN\Administrator account initiated the shutdown.Sukh

I would post in the server forum - http://social.technet.microsoft.com/Forums/en-US/category/windowsserver That event ID indicates NTDOMAIN\Administrator account initiated the shutdown.Sukh

I think after my last update something is changed because the event viewer says the restart is happening on all days except friday at 7:00 AM. Normally if it restarts properly then things will work fine otherwise my exchange system will be down as Client Access and Hub transport resides in this server. When there is problem.. I cant RDP to this server nor the exchanges services working. But I can ping to this server from the network. I need to know where we can clear of this restart which is not at all neccessary and also I need to plan before a restart. This kind of a restarts will eventually screw my Exchange cluster. Event Type: Information Event Source: USER32 Event Category: None Event ID: 1074 Date: 11/24/2011 Time: 7:00:00 AM User: NTDOMAIN\Administrator Computer: EXCHHTCA Description: The process winlogon.exe has initiated the restart of computer EXCHHTCA on behalf of user NTDOMAIN\Administrator for the following reason: No title for this reason could be found Reason Code: 0x840000ff Shutdown Type: restart

Hi Sabir, I find you have asked the same question in the Windows Server forum: http://social.technet.microsoft.com/Forums/en-US/winservergen/thread/68c4a3af-0c7b-4112-a68b-6a0f9bab1751 Suggest you focum on that thread and I will close this one. Thanks. Frank