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Upgrading Root Certificate Authority from Windows Server 2012R2 to 2022: What to Expect?

July 6, 2025 6 answers
Asked by CuriousDeveloper92
Hey everyone, I'm looking to upgrade our root certificate authority from Windows Server 2012R2 to 2022. To be honest, my experience with certificate authorities is pretty limited—it's mostly a set and forget situation for me. The server isn't tied to Active Directory but does use our AD root certificate. I can perform an in-place upgrade since that's a supported option. My main concern is what might happen after the upgrade. How likely is it that this will cause issues with Active Directory? Just to note, our setup is hosted on Azure, so rolling back if something goes wrong is straightforward. Thanks for any insights!
AD impact Azure hosting Certificate Authority IT best practices System Operations upgrade process Windows Server

Answers

UpgradeSupport101
An in-place upgrade is indeed supported, but just a heads up: you should back up your CA and remove it before starting the upgrade, then reinstall and restore afterward. Microsoft has some detailed instructions for this process.
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MigrationPro23
I actually set up a new CA and migrated everything over to it instead of upgrading. It might be a smoother approach without any risk of breaking your existing setup.
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TechGuru88
Given that you’re not too familiar with certificate authorities, I suggest creating and upgrading a test CA in a lab environment first. Mistakes with root CAs can lead to significant issues. If you have a subordinate CA, that’s good too; it will help mitigate risks since only CRL updates will be affected temporarily.
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CertWizard33
You should be fine! Just make sure you have good backups and snapshots before starting. There's plenty of guides available to help you through it, so don’t hesitate to use those resources.
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BackupQueen45
Don't forget to export your root CA along with the private key, and make sure it's password-protected. If anything goes sideways, you can always rebuild the root CA and import the old certificate.
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UpgradeMaster76
It's super easy and well documented! I found a video on YouTube where a guy walks you through the whole process step by step—definitely worth checking out!
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