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Step-by-Step Guide: Active Directory Migration from Windows Server 2008 R2 to Windows Server 2022

dishanfrancis's avatar
dishanfrancis
Icon for Microsoft rankMicrosoft
Nov 15, 2021
Windows Server 2008 and Windows Server 2008 R2 Operating system reached the end of their support cycle on the 14th of January 2020. Because of this many organizations wanted to migrate away from thes...
Updated Nov 15, 2021
Version 2.0
windows server
GianlucaX's avatar
GianlucaX
Copper Contributor
Jan 19, 2022

I used this guide to migrate from DC 2008R2 to 2016. all was smooth, excepted for a couple of issues (the number points to the one used in the guide).

Add Windows server 2022 Domain Controller

5. Install-ADDSDomainController

I had to add this parameter:

 

-SafeModeAdministratorPassword $secureString

 

because I got a Read-Host error from my powershell 7.2. This could be due to the windows sevrer version (mine: 2016, this guide: 2022) but not sure.

To get it working I defined a variable like this (was lazy, didn't wanted to investigate the root reason....):

 

$secureString = ConvertTo-SecureString "Goofyrulez" -AsPlainText -Force

 

 

Decommission Old Domain Controller

5. In the Remove DNS Delegation page ...

Gave error: It was impossible to remove delegations on remote DNS server. RPC service (or server?) not available.

This second issue didn't had any consequences. Investigating a little bit, went to check the DNS server on the new DC to remove dns delegations manually using:

 

 Get-DnsServerZoneDelegation -Name "forward or reverse zone"

 

 to check if any delegations were present. I found none.

But, if were found I'd used this command:

 

Remove-DnsServerZoneDelegation

 

After reboots, the new DC was happily running.

Had to replace old DNS server IP from some static Ip configurations and that was all.

 

Great guide