Hi Luis, Thank you for your post. 1.Install hotfixes KB938134 and KB936009. 2.Check the DHCP reservations if there are any duplicate or invalid entries, remove them. KB922835 3.Reservations ranges for certain scopes that were out of the range defined for each scope. KB930142 If there are more inquiries on this issue, please feel free to let us know. Regards, Rick Tan

Hi all, I have a major issue with one of my DHCP Server (Operating system: Windows Server 2003). I have more than 100 scopes, and in the beginning of the week, about 50% of them lost several scope information: Some lost gateway; Some lost reservations; Some lost subnet info; I don't see a pattern here, or scope relations. Another annoying thing is that i rebuild some scopes from scratch (no backup unfortunately) and yesterday i stopped and restarted dhcp service and same problem again, some scopes lost configuration. Any help to troubleshoot or explain the problem ? Please help. Kind regards,Lus Carmo

Hi Luis, Thank you for your post. 1.Install hotfixes KB938134 and KB936009. 2.Check the DHCP reservations if there are any duplicate or invalid entries, remove them. KB922835 3.Reservations ranges for certain scopes that were out of the range defined for each scope. KB930142 If there are more inquiries on this issue, please feel free to let us know. Regards, Rick Tan