Active Directory Migration 2003 to 2012 R2

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Current Environment

Microsoft Active Directory 2003 with Exchange 2010

 

Requirements for migration

1- New Windows Server 2012 R2 server to be prepared. 

2- Join the new Server to the old Dc.

 

 

Installing DC role

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to migrate the AD Operations Master roles.  The simplest way to move these roles is via PowerShell.  On Server 2012 AD PowerShell modules, this can be done from anywhere.  Simply run the following command to view you current configuration, and change them:

 

PS C:> netdom query FSMO

 

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Move-ADDirectoryServerOperationMasterRole -identity “dc1” -OperationMasterRole 0,1,2,3,4

 

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Making sure that all the roles have been migrated :

 

netdom query FSMO

 

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Adding second DC

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Reference:

https://technet.microsoft.com/en-us/library/ee617229.aspx?f=255&MSPPError=-2147217396

Source: Default-First-Site-NameDC2

******* 1 CONSECUTIVE FAILURES since 2015-03-23 19:37:45

Last error: 8524 (0x214c):

The DSA operation is unable to proceed because of a DNS lookup failu

re.

Naming Context: CN=Configuration,DC=kibtek,DC=local

Source: Default-First-Site-NameDC2

******* WARNING: KCC could not add this REPLICA LINK due to error.

Naming Context: CN=Schema,CN=Configuration,DC=kibtek,DC=local

Source: Default-First-Site-NameDC2

******* WARNING: KCC could not add this REPLICA LINK due to error.

Naming Context: DC=kibtek,DC=local

Source: Default-First-Site-NameDC2

******* WARNING: KCC could not add this REPLICA LINK due to error.

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Resolution:

After joining new DC you will see this error until the replication with the PDC and schema master is finished.

Use the repadmin /syncall to hasten the sync process.

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After we changed the PDC and Schema master role server to the new DC and shut down the old DC for test. On Exchange 2010 server you might get the following error

Exchange Console

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Current deployment

  1. Exchange 2010
  2. New DC 2012 R2 with another Additional DC installed newly.
  3. Two DC 2008R2 but have been shut down for testing.

Problem:

After you shutdown or demote the old PDC or Schema master Demote Domain Controller role, Microsoft Exchange Management Console fails to retrieve any Exchange information with error message “An error caused a change in the current set of Active Directory Server settings. Restart Exchange Management console.”

Cause

Microsoft Exchange management console caches the data in the user’s profile for quick access, So whenever you try to open EMC from an existing Exchange admin profile you will get the same error.

Resolution:

Navigate to the following folder and delete the Exchange Management Console file.

%userprofile%appdataroamingMicrosoftMMCExchange Management Console

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Close EMC and reopen it and you should be done.

 

Hope this was useful Smile 

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