Hi,

Can you check in your IIS Manager, what is the IIS Authentication scheme enabled for your K2 > Runtime application? If you have Windows Authentication enabled, IIS will automatically log your user in using Windows Authentication, and you will never get routed to K2 Forms STS. In fact, with Windows Authentication enabled, all the realms and claim configuration you configured will not take effect.

You need to disable Windows Authentication, and enable Forms Authentication.

I was trying to replicate what was is on this URL:

https://help.k2.com/onlinehelp/k2five/icg/5.1/default.htm#Configure/SF/MultiAuthSQLUM.htm

In other for me to be able to invite external users that are not on my AD to paticipate in a workflow (Start and View)

Hi,

It will help if you can provide screenshots of the Issuer, Claims and Realms pages from K2 Management. Mask out the URL if you do not wish to share them.