Having issues after an upgrade or patch instalation
After an upgrade or patch installation users must clear browser cache. Close all browser windows, open new one and press at the same time Ctrl+Shift+Delete to open Browsing history
For Chrome select All Time for Time range in both Basic and Advanced tab
For Edge, select All time in Time range
For FireFox select Everything in Time range to clear
For IE make sure to uncheck Preserve Favorites website data