Seems a lotta peeps experienced this issue: https://adblockplus.org/forum/viewtopic.php?f=27&t=56975 looking thru those posts, some had success playing with EDGE auto-delete on close cookies/history settings---- then, it appears the issue was addressed here-- https://adblockplus.org/forum/viewtopic.php?f=27&t=57040 with this fix: Step 1. Uninstall Adblock Plus for Edge Step 2. Install development build here https://www.microsoft.com/en-us/p/adblock-plus-development-build/9nblggh4x3bm?activetab=pivot:overviewtab