https traffic stopped after upgrading ltm 11.3 to 11.5.0

after upgrading from LTM 11.3 to 11.5.0, while accessing any https website through ltm it requires authentication?? I did a downgrade to 11.3, I realize that issue is resolved? which means that there is something additional need to be done on 11.5 to have it works well how to resolve it?