I'm currently running GoTo 0.415.0 4.2.1 (64-bit Machine Wide installer) on my Windows 10 laptop. Starting last week, I saw a notice in the client that an update was available - despite clicking on the prompt, closing & restarting the app, and rebooting the computer, the message persists. I see that 4.2.1 is also the latest version available for download.
Additionally - my client has started closing on its own, and I find I need to manually re-launch it two or three times a day. This began about a day after the update notice appeared, but may or may not be related.
No error messages are displayed or reasons for the app to not update / restart are given, it just seems to be stuck trying to update itself and failing. Co-Workers have reported the same issue in our internal chat.