Dear Boss Presently we having two Domain Controller example ( Main , Sub) it has Windows 2008 64bit and DC / DNS / GC servers. for our domain it's working . This morning our Main domain have memory error . so i am going to be active primary operation master role my sub domain How can i do it without distribute Regards Subash

I didn't quite understand the question but I am guessing you want to move the FSMO roles that were on the defective DC to the last DC available. If you can't get back the DC online, you have to seize the roles that were on that DC and make sure that it won't be brought back as a domain controller. To seize the FSMO roles you have to go to your remaining DC and use ntdsutil. On any domain controller, click Start, click Run, type Ntdsutil in the Open box, and then click OK. Type roles, and then press ENTER. Type connections, and then press ENTER Type connect to server <servername>, where <servername> is the name of the server you want to use, and then press ENTER. At the server connections: prompt, type q, and then press ENTER again. Type seize <role>, where <role> is the role you want to seize. For example, to seize the RID Master role, you would type seize rid master. You will receive a warning window asking if you want to perform the seize. Click on Yes. More details here: http://support.microsoft.com/kb/255504MCTS...

Dear Boss, Tnx for sending a msg , i tell u my setup we have Two Domain Controller it has windows 2008 64 bit os . both domain controller have ADS, DNS , DC . this morning my one of the domain controller is memory error . so i am going to be shutdown for maintance . so i want to be active another domain controller with out any problem . could you help me . Regards Subash

Then simply log on that other DC and transfer the FSMO roles on it. http://ms-mvps.com/server/2008fsmo1.htm http://support.microsoft.com/kb/324801MCTS...

Hello, You can transfer FSMO roles to the new DC using UI or NTDSUTIL commands. Just if your server will be okay after a short period, there will be no need for such transfer. More about impacts if an FSMO holder is down: http://windowsdevcenter.com/pub/a/windows/2004/06/15/fsmo.html This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified Technology Specialist: Designing and Providing Volume Licensing Solutions to Large Organizations Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator Microsoft Certified Trainer

Then simply log on that other DC and transfer the FSMO roles on it. http://ms-mvps.com/server/2008fsmo1.htm http://support.microsoft.com/kb/324801MCTS...

Hello, You can transfer FSMO roles to the new DC using UI or NTDSUTIL commands. Just if your server will be okay after a short period, there will be no need for such transfer. More about impacts if an FSMO holder is down: http://windowsdevcenter.com/pub/a/windows/2004/06/15/fsmo.html This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. Microsoft Student Partner 2010 / 2011 Microsoft Certified Professional Microsoft Certified Systems Administrator: Security Microsoft Certified Systems Engineer: Security Microsoft Certified Technology Specialist: Windows Server 2008 Active Directory, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Network Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows Server 2008 Applications Infrastructure, Configuration Microsoft Certified Technology Specialist: Windows 7, Configuring Microsoft Certified Technology Specialist: Designing and Providing Volume Licensing Solutions to Large Organizations Microsoft Certified IT Professional: Enterprise Administrator Microsoft Certified IT Professional: Server Administrator Microsoft Certified Trainer