Download the Mac Envaluation Utility from Apple Seed fo IT, and run it on the devices. If you dont have access to Apple Seed, you can look in to Jamf Enviornment Test (JET) but it has not been updated in awhile. My gut is saying some host needed for managed updates to function is not open or getting a TLS inspection and the traffic is failing.

Try to toggle off and ON the Software Update Feature for a reset?

 

Try to toggle off and ON the Software Update Feature for a reset?

 

 

Thank you, I'll try that workaround, and I'll let you know how it goes.

#!/bin/zsh


recommendedUpdates=$(defaults read /Library/Preferences/com.apple.SoftwareUpdate.plist RecommendedUpdates | wc -l | awk '{print $1}')

if [[ recommendedUpdates -gt 2 ]]; then
echo "<result>True</result>"
else
echo "<result>False</result>"
fi

Try running this EA to check if the device has any pending software updates. If it shows False but the device is not on the latest version, there may be network issues preventing the update. You can also download the Mac Evaluation utility and run it to identify any blocks and resolve them.

The JET application was discontinued, now you can use JamfCheck (https://github.com/txhaflaire/JamfCheck) basically you have some URL blocked, you can check in the following link (https://support.apple.com/en-us/101555) the links that are necessary to update the macOS, check if they are blocked in your organization