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Active Directory Migration from Windows Server 2012 R2 to Windows Server 2022
1. Prepare
DC11 : Domain Controller(Yi.vn) running Windows Server 2012 R2 | DC24 : Workgroup running Windows Server 2022
2. Step by step : Active Directory Migration from Windows Server 2012 R2 to Windows Server 2022
DC24 : Install an Additional Domain Controller and transfer FSMO from DC11
Join to Yi.vn - Restart server
Server Manager - Manage - Add Roles and Features - Next to Server Roles - Select 'Active Directory Domain Services' + DNS - Add Features
Next and Install - Close
Click Notifications - Click 'Promote this server to a domain controller' - Select 'Add a domain controller to an existing domain'
Type the Directory Services Restore Mode (DSRM) password : Enter Password and Confirm password - Next to Install - Restart
Logon use account Yi\administrator - Start - cmd - Type : nltest /dclist:Yi.vn === Check Domain Controllers
Start - cmd, type : netdom query fsmo # check server has installed FSMO roles
Tranfer RID Master, PDC Emulator, and Infrastructure Masters :
Server Manager - Tools - Active Directory Users and Computers - Right-Click Yi.vn - Operations Masters... :
Tag RID : click Change... - Yes + Tag PDC : click Change... - Yes + Tag Infrastructure : click Change... - Yes
Tranfer Domain Naming Master :
Server Manager - Tools - Active Directory Domains and Trusts
Right-Click 'Active Directory Domains and Trusts[DC24.Yi.vn]' - Operations Masters... - Click Change... - Yes
Tranfer Schema Master
Start - cmd, type : 'regsvr32 schmmgmt.dll' - mmc - File - add/Remove Snap-in... - Select 'Active Directory schema' - add - ok
Right-Click 'Active Directory schema[DC11.Yi.vn]' - Change Active Directory Domain Controller... - Change to : Seclect DC24.Yi.vn - ok
Right-Click 'Active Directory schema[DC24.Yi.vn]' - Operation Masters... - Click Change - Yes - Close
Start - cmd, type : netdom query fsmo # show server holding FSMO Roles is DC24 - OK
DC11 : Demote Domain Controller
Server Manager - Manage - Remove Roles and Features - Server Roles : Untick 'DNS Server' + 'Active Directory Domain Services'
Remove Features - Demote this domain controller - Credentials : Tick 'Force the removal of this domain controller' - Next
Warnings : Tick 'Proceed with removal' - New Administrator Password : Enter password and confirm - Demote - Restart
DC24 : Check Domain Controllers again
Point DNS to DC24(10.0.0.24)
Server Manager - Tools - Active Directory Users and Computers - Yi.vn - Domain Controllers - Right-Click DC11 - Delete
Tick 'Delete this Domain Controller anyway. ...' - Delete - Yes
Server Manager - Tools - Active Directory Sites and Services - Sites - Default-Fist-Site-Name - Servers - Right-Click DC11 - Delete - Yes
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