I haven't had any issues with the auto-updater I use, which says "EQ2MAP Auto Updater (Version 1.2.10)" in the title bar at the top of the windows. That one is running okay on three different 64-bit Win10 systems.
That said, my experience so far has been that Win10 is fairly buggy. Right from the start, I've seen the System Event Logs rack up piles of error events, many of them serious. So you may have something ugly going on behind the scenes that's causing your problem.
-= Therendil =-
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