Hello, We saw this morning that every dhcp reservations disappeared on our 2 servers. We'd restored the DHCP DB and everything was fine. My question: an idea ? NB: it's NOT that case: http://support.microsoft.com/kb/936009/en-us NB2: it's NOT that case too: http://support.microsoft.com/kb/922835 Regards

Hi, Check DHCP logs, you might get some clues over there. Analyzing server log files: http://technet.microsoft.com/en-us/library/cc776384(v=ws.10).aspx Enable Audit Logging for future use if not already enabled Audit logging: http://technet.microsoft.com/en-us/library/cc758251(v=ws.10).aspx Check Event Viewer on DHCP server as well. Thanks Regards, Santosh I do not represent the organisation I work for, all the opinions expressed here are my own. This posting is provided "AS IS" with no warranties or guarantees and confers no rights.

Hello, It could be due to a corruption in DHCP database cause of the unexpected restart of DHCP service or the server itself. At current, I would suggest monitor your DHCP server for some days and see whats happening. Thanks Zhang

Hello, It could be due to a corruption in DHCP database cause of the unexpected restart of DHCP service or the server itself. At current, I would suggest monitor your DHCP server for some days and see whats happening. Thanks Zhang