When I do my 5.5 -> 2003 upgrade we did it afterhours but no adverse effects were caused to any DC. The only reboots required were on the new Exchange boxes. =20 -----Original Message----- From: msexchange-bounce@xxxxxxxxxxxxx [mailto:msexchange-bounce@xxxxxxxxxxxxx] On Behalf Of Christine Easton Sent: Monday, November 10, 2003 9:20 AM To: msexchange@xxxxxxxxxxxxx Subject: [msexchange] ForestPrep/Domain Prep Hello, Can I run ForestPrep and Domain Prep on an active DC or should I do it after hours? It does not state it in the Documentation I found. Thanks for your help. -Christine =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D Use the below link for Archives, and to set your preferences. http://thethin.net/exchangelist.cfm ===================== Use the below link for Archives, and to set your preferences. http://thethin.net/exchangelist.cfm