I'm trying to defrag one of my 4 exchange databases. The first three went fine. The 4th gives the error below. Anyone know why and how to fix it? Thank You Event Type: Error Event Source: ESE Event Category: General Event ID: 426 Date: 7/4/2011 Time: 8:27:32 AM User: N/A Computer: EX01 Description: eseutil (972) The database engine could not find the file or folder called jcb.dll.Thank You, Scott

Why are you trying to defrag them?

Which version of Exchange you are running ? Check the below URL : http://support.microsoft.com/kb/244525Sumanth G

i have seen this happening due to memory issues. please set the /3gb switch. reboot and defrag. and remove the /3gb then reboot if this is SBSDhruv

I defrag yearly... Exchange 2003 Enterprise I am not using the /3gb. Changed to what you see below. I started a backup earlier. Once done I will reboot and try again. [boot loader] timeout=30 default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS [operating systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Windows Server 2003, Standard" /noexecute=optout /fastdetect /3gb ThanksThank You, Scott