I have Atom 1.19.0 on Windows and 1.19.3 is available, however the update function always returns no update found. For contrast Atom on Mac Updates instantly. Has anyone else seen this or can offer tips on how to debug?
That has happened to me once, and I solved it by downloading and installing the latest version. Since then, updates have been automatic again.
I reinstalled which had no effect. Then I uninstalled and deleted my .atom directory (which has been around since pre-1.0) and then reinstalled and now it works.