Tools -> Update OS doesn't show "Check Updates" button, and shows status as Unknown

[BestITGuys]

I'm trying to update from 6.9.2 to 6.10.3, but there seems no way to do it. It also shows my current status as "unknown", and if I change the branch from stable to next, the whole row disappears. I'm attaching the screenshots...

 

I've seen in other threads that their Plugins were also missing the "Check Updates" button, but in my case, it's there.

 

So, what can I do to fix this?

 

Thanks

[JorgeB]

Try disabling check for OS updates under notification settings, then manually check for an OS update.

[BestITGuys]

That worked! Thanks