We are running Exchange 2000 with sp3. Once a while we send news letter to all our memberships by using Broadcast HTML. Whenever we send out the news letter, the users will not be able to access the Exchange next day. We need to reboot the server. Event Viewer shows: "Source ESE, Category Transaction Manager, Event ID 623, Description: inetinfo (2824) The version store for this instance (0) has reached its maximum size of 1Mb. It is likely that a long-running transaction is preventing cleanup of the version store and causing it to build up in size. Updates will be rejected until the long-running transaction has been completely committed or rolled back. Possible long-running transaction: SessionId: 0x0EE404A0 Session-context: 0x00000000 Session-context ThreadId: 0x000009A0" According to MS Q318162 "After you apply this fix, the default value for the MaxVerPages value is increased from 256 KB to 5 MB. After you apply this fix, you can also use the ESE version store to change to a higher value by using the DatabaseMaxVerPages registry value." I can't find MaxVerPages and DatabaseMaxVerPages in the registry. Do we need to add them or any suggestions?