Hi. Three days ago, I installed AWB v22.214.171.124 SVN 12353 (2019-09-17 21:16:42), and it reports that it is working with "Internet Explorer version: 11.0.19041.985, .NET version: 4.0.30319.42000, Windows version: 6.2". When I run AWB Updater v126.96.36.199, after "Getting current AWB and Updater versions", it reports "Retrieving current version...FAILED". See the screenshot at https://commons.wikimedia.org/wiki/File:AWB_Updater_-_188.8.131.52_FAILED.jpg and the discussion at https://en.wikipedia.org/wiki/Wikipedia_talk:AutoWikiBrowser#Updater_FAILED .
https://github.com/reedy/AutoWikiBrowser/commit/1e853c1e4744cfa0f17ad4b4b4178abab7da9a12 originally fixed this in AWB (August 2018).
Slightly surprised the updater hasn't broken before now...
https://github.com/reedy/AutoWikiBrowser/commit/2e9931444f3f436445b4fa6b48559ac558ec0eb0 fixes it for the Updater (need to do a release)