Hi Team. I have a error when Prepare Schema for Exchange Server 2010. Enter commando setup.com /PrepareSchema. Show the following error: Press any key to cancel setup................ No key presses were detected. Setup will continue. Preparing Exchange Setup Copying Setup Files COMPLETED No server roles will be installed Performing Microsoft Exchange Server Prerequisite Check Organization Checks COMPLETED Configuring Microsoft Exchange Server Extending Active Directory schema FAILED The following error was generated when "$error.Clear(); if ($RoleDomain -ne $null) { initialize-ExchangeLegacyPermissions -Domain $RoleDomain -DomainContro ller $RoleDomainController; } else { initialize-ExchangeLegacyPermissions -AllDomains:$true -DomainControll er $RoleDomainController; } " was run: "Object reference not set to an instance of an object.". The Exchange Server setup operation didn't complete. More details can be found in ExchangeSetup.log located in the <SystemDrive>:\ExchangeSetupLogs folder. I appreciate you help. Thanks,

Are you running the install as a member of the Schema/Enterprise/Domain Admins AD groups? Are you running from a server in the same AD site as the schema master? If not, you need to.Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Lync 2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington

Are you running the install as a member of the Schema/Enterprise/Domain Admins AD groups? Are you running from a server in the same AD site as the schema master? If not, you need to.Tim Harrington | MVP: Exchange | MCITP: EMA 2007/2010, MCITP: Lync 2010, MCITP: Server 2008, MCTS: OCS | Blog: http://HowDoUC.blogspot.com | Twitter: @twharrington

Hi Carlos, Any updates? Please also see this similar post: Installing Exchange 2010 Standard Fails with Error "Object reference not set to an instance of an object http://social.technet.microsoft.com/Forums/en-US/exchangesvrdeploy/thread/1d60594e-af05-411f-9144-b20f9d161547 Frank Wang Forum Support Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

Pls go through the ExchangeSetup.log and post last 20 lines here it may help us to provide better solution/suggestion. Sudhir Bidye.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Pls go through the ExchangeSetup.log and post last 20 lines here it may help us to provide better solution/suggestion. Sudhir Bidye.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.