Moved to vCenter forum.
Edward L. Haletky
VMware Communities User Moderator
Author of the book 'VMWare ESX Server in the Enterprise: Planning and Securing Virtualization Servers', Copyright 2008 Pearson Education.
Blue Gears and SearchVMware Pro Blogs: http://www.astroarch.com/wiki/index.php/Blog_Roll
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Hi, welcome to the forums.
Do you get anything in the VC server logs, or Windows Event Viewer? To check the VC logs, log into VC, click on the Administration button in the tool bar -> click System logs and change the drop down to VirtualCenter Server Log for the Date/time. start with the Log ending in vpxd-index it will just give you a number but that will tell you which "VirtualCenter System Log http://vpxd-x.log" is current.