Software Update macOS - SpecificVersionUnavailable

Yes, we see similar results in the History tab. I usually rely on two things:

1. Click the Management tab Instead of going to the History tab. Click Operating System Update. Do you have a DDM log here or is nothing going on?

2. If nothing is going on, turn off and on the Software Update feature to reset the logs. Re-run the DDM scheduled update. Repeat step 1. 

1. In the "Operating System" tab there is nothing, just "No updates in progress".

2. We actually tried that yesterday to clear the history as I read that in another post with another problem we also had. Looks like it has worked on most of the remaining Mac's. The deadline is set to tomorrow at 16:00, so we are waiting to see friday morning if devices have failed again. But this specific error I have only seen on one Mac so far (I have not gone through all 200 devices that had failed 😁)

Cool. Let us know how it goes. 

My experience is that it'll catch most, but some lagger.

I wonder what the install log says on an impacted device. I wonder if there are some network shenanigans going on.

The "SpecificVersionUnavailable" error may occur if the update hasn't fully propagated or is incorrectly flagged. Check device configurations and ensure network connectivity.

Thank you so much for the information.

I'm encountering this issue intermittently as well, did you have any luck getting it resolved?

Sorry for the very late response. We switches to using specific version for the scope of our updates and that seems to work a lot better, but we still have some random fails that I'm trying to figure out. But at least I have not encountered that error since.