How to Prepare(Schema Upgrade) the Active Directory Schema for Windows Server 2012 R2

Today we will look that how to prepare the AD Schema when migrate DC from 2008 r2 to Server 2012 R2.

To do that follow steps below:

  1. Check Schema object Version before perform procedure. To do that  follow picture below. If it is 47 that’s means you have Windows server 2008 r2 DC. After schema upgraded schema version  will be 69. All schema version you can see below:

Version      Windows Server Version
13                    Windows 2000 Server
30                   Windows Server 2003
31                    Windows Server 2003 R2
44                   Windows Server 2008
47                   Windows Server 2008 R2
56                   Windows Server 2012
69                   Windows Server 2012 R2
81                   Windows Server 2016 CTP

6m2008r2to2012r2ss

2. Insert the Windows Server 2012 R2 DVD into the DVD drive of the Windows Server 2008  R2 Domain Controller:

7m2008r2to2012r2ss

3. Open Command Prompt As Administrator:

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4. Open the Directory of the DVD drive and navigate to adprep directory and then type : adprep /forestprep

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5. You will receive a warning that all active directory domain controllers in the forest must be running at least windows server 2003. click c and Enter to confirm and continue.

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6. Adprep will successfully update the forest:

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7. Then type adprep /domainprep and press enter :

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8. As we see Adprep successfully updated the domain-wide information.

13m2008r2to2012r2ss

If you check(1st steps) schema object version again it will be 69.

That’s all Schema Upgrade successfully.

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