Defer Tahoe for 90 days

[bogdanw]

As macOS Tahoe will be release on 15 September 2025, I installed on my Macs with the latest Sequoia the profile to defer Tahoe for 90 days:
Defer90.mobileconfig

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>PayloadContent</key>
    <array>
        <dict>
            <key>PayloadDisplayName</key>
            <string>Restrictions</string>
            <key>PayloadIdentifier</key>
            <string>com.apple.applicationaccess.EBD7C59B-61CE-4602-B287-2779E580807D</string>
            <key>PayloadType</key>
            <string>com.apple.applicationaccess</string>
            <key>PayloadUUID</key>
            <string>EBD7C59B-61CE-4602-B287-2779E580807D</string>
            <key>PayloadVersion</key>
            <integer>1</integer>
            <key>enforcedSoftwareUpdateMajorOSDeferredInstallDelay</key>
            <integer>90</integer>
            <key>forceDelayedMajorSoftwareUpdates</key>
            <true/>
        </dict>
    </array>
    <key>PayloadDisplayName</key>
    <string>Defer90</string>
    <key>PayloadIdentifier</key>
    <string>Mac.880DF8DC-ECB6-4FA2-A00B-BA671494C830</string>
    <key>PayloadScope</key>
    <string>System</string>
    <key>PayloadType</key>
    <string>Configuration</string>
    <key>PayloadUUID</key>
    <string>880DF8DC-ECB6-4FA2-A00B-BA671494C830</string>
    <key>PayloadVersion</key>
    <integer>1</integer>
    <key>TargetDeviceType</key>
    <integer>5</integer>
</dict>
</plist>

along with a profile to prevent automatic download and installation of updates:
SoftwareUpdate.mobileconfig

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>PayloadContent</key>
    <array>
        <dict>
            <key>AutomaticDownload</key>
            <false/>
            <key>AutomaticallyInstallAppUpdates</key>
            <false/>
            <key>AutomaticallyInstallMacOSUpdates</key>
            <false/>
            <key>PayloadDisplayName</key>
            <string>Software Update</string>
            <key>PayloadIdentifier</key>
            <string>com.apple.SoftwareUpdate.ADF49245-EA04-4883-A342-0FC43F30C9D2</string>
            <key>PayloadType</key>
            <string>com.apple.SoftwareUpdate</string>
            <key>PayloadUUID</key>
            <string>ADF49245-EA04-4883-A342-0FC43F30C9D2</string>
            <key>PayloadVersion</key>
            <integer>1</integer>
        </dict>
    </array>
    <key>PayloadDisplayName</key>
    <string>SoftwareUpdate</string>
    <key>PayloadIdentifier</key>
    <string>Mac.1AAA312C-7658-4823-81F6-A49A659A3F74</string>
    <key>PayloadScope</key>
    <string>System</string>
    <key>PayloadType</key>
    <string>Configuration</string>
    <key>PayloadUUID</key>
    <string>1AAA312C-7658-4823-81F6-A49A659A3F74</string>
    <key>PayloadVersion</key>
    <integer>1</integer>
    <key>TargetDeviceType</key>
    <integer>5</integer>
</dict>
</plist>

Profiles created with the free App Store app iMazing Profile Editor https://apps.apple.com/app/imazing-profile-editor/id1487860882

How to install profiles video https://forums.macrumors.com/thread...ore-sequoia-for-90-days.2436999/post-33491789 Note: On Sequoia, profiles are now in System Settings- General - Device Management
Change Device Management settings on Mac https://support.apple.com/guide/mac-help/change-device-management-settings-mh35474/mac

As Apple has depreciated enforcedSoftwareUpdateMajorOSDeferredInstallDelay and SoftwareUpdate, it is unclear at the moment if the profiles will work and prevent Tahoe for being shown in Software Update on Macs running Sequoia.

enforcedSoftwareUpdateMajorOSDeferredInstallDelay
https://developer.apple.com/documentation/devicemanagement/restrictions
AutomaticallyInstallMacOSUpdates
https://developer.apple.com/documentation/devicemanagement/restrictions

Apple's related documentation:
Manage software updates in your organization https://developer.apple.com/videos/play/wwdc2021/10129/
Installing and enforcing software updates for Apple devices https://support.apple.com/guide/dep...d-enforcing-software-updates-depd30715cbb/web

Last year's thread "Ignore Sequoia for 90 days" https://forums.macrumors.com/threads/no-longer-possible-ignore-sequoia-for-90-days.2436999/

iMazing configuration of profile to defer for 90 days


iMazing configuration of profile for Software Updates

 

[jackerin]

Am I missing something or does this do something else than turning off software updates in the system preferences?

 

[maflynn]

Why not just turn off automatic updates in the settings app?

Seems like a lot more work, trying to use that script

 

[A1423]

Is there a specific reason for this? Or is it just general skepticism to wait a couple of months before upgrading?

 

[maflynn]

general skepticism to wait a couple of months before upgrading?

I don't practice what I preach, but its generally safest to wait a while before upgrading to a newer version of the operating system. No matter much beta testing occurs, there will be bugs, and performance issues. With that said, I'm like 99% sure I'll not be holding off

 

[bogdanw]

Can you please read, the title of the thread at least, before asking questions and expressing your opinions?

 

[A.F]

Much appreciated, will be following

Though i've already followed your instructions regarding all this (and my humble thanks once again!) in the previous thread, since i had an Intego X9 key, i've also blocked updates through its firewall, which.. admittedly results in the same thing, but am testing things out.
You know, in case they do deprecate eveything. Impractical, blocking -> unblocking -> checking -> reblocking from firewall, but better than nothing.

I like what they've shown on Tahoe so far, but i'll wait until 26.23.101 before taking the plunge.

No offense to the Apple die hards out in the wild, but i like control. With all the consequences it may entail.
* also, my humble apologies in advance for the inane questions i'm bound to ask, am new to Macs

 

[ignatius345]

No offense to the Apple die hards out in the wild, but i like control. With all the consequences it may entail.

It's also common practice in a lot of work environments to hold off a bit on yearly OS updates. People run all kinds of software and you really don't want to find out after the fact that something you rely on daily isn't working properly under a new OS.