Defer major macOS updates macOS 27

Pretty sure that in OSX 27 the MDM command to defer will not work.
BUT...
If you use Blueprints with DDM, then you can go back to having major OSX version deferals at 90 days.There is a deferal section in the Blueprints for Software Updates.
I think if you set up SSO sign in to your on Prem then you can get access to Blueprints.

Thanks as noted above I do not have JAMF Cloud nor do we have Jamf ID SSO setup (we have our own SSO on prem for jamf) so I do not have access to blue prints.

It would be nice if JAMF enabled DDM macOS deferrals for on prem like they are doing for the Download & schedule DDM command. 

The deferrals may be on their way. I was at JNL London yesterday, and they showed it in a demo, said there were upgrades coming at the end of the month.
It’s Apple and their push for DDM, that is driving this. They did say there are things in progres for on Prem servers.

Thank you for that info, look forward to learning more.

If you want to check out all the available declarations payloads and keys for Software Update Settings and others download Jamfs awesome DDM Explorer

MajorPeriodInDays deferrals is there :) You can copy the json output and test 

Cool, But those only work in blue prints now right?

Will adding the update as a Restriction still work?

Should still work with 26 and lower, but will not work with 27. I say should, because this is Apple and they may pull it from 26 as well, the notifications when they announced did not exclude future versions of 26.

HI, i also have a on prem Jamf Pro instance, and i’m interested in how you setup the MacOS upgrade restriction.

Thank you

You should be able to configure a Profile with a Restrictions payload to disable Software Update (System Settings>General>Software Update)

Thank you for your answer, could you screen how you configure it in Jamf?

Just to be sure i made the good things

Create a new Profile and on the left, scroll down and look for Restrictions payload and click it and then click configure and you will see a box that says “Restrict items in System Preferences”, click that and then check the box for “Disable selected items” and then scroll down and find Software Update and check it. Then scope the profile to your test machine.

Ok thats what i did, i will try on my test machine, does it also block minor security system update?

if yes, it would be anoying 

Thank you

I think point is this will not work in macOS 27 as apple is using DDM to do this now

Ok need to know how to manage this with DDM on Jamf, i don’t understand how it works

With Jamf pro cloud you use blue prints

https://learn.jamf.com/r/en-US/jamf-pro-blueprints-configuration-guide/Configuring_the_Software_Updates_Component

Also Derflounder has a guide on deferrals with blueprints https://derflounder.wordpress.com/2026/01/26/deploying-apple-software-update-deferrals-using-blueprints-in-jamf-pro/

Thank you but, i don’t have Jamf Cloud, i’m on premise Jamf Pro instance.

By using Blueprint.

1. Add the Software Update Settings component.
2. Go to Deferrals.
3. Enable Number of days to defer a major macOS software update.
4. Set it to 90.
5. Scope the Blueprint 

This is what I'm using to block macOS 27 for 90 days.