[LRE TIPS] - Controller/Analysis 2020 cannot connect to ALM 15 which uses SSO, VuGen works fine

[#1]

Symptoms

When trying to connect from Controller/Analysis of LR 2020, it throws out error:

Failed to login, please contact system Administrator for help

Description: Expect external authentication data but did not get one

VuGen works fine, the issue only occurs to Controller and Analysis.

Controller/Analysis/VuGen are on the same machine.

Solution

Please try the attached hotfix (replace existing file in <LR>\bin, remember to backup existing file first)

[PascalCalovini]

What do I have to patch? The LRE-Server or Controller & Analysis?