HTTP 400 Issues due to large group membership

Hello All,

We currently found out that some users are member of a lot of AD Groups, causing authintication errors.

We fixed this by upping the allowed size of their token using the MaxTokenSize registry key.

We've got an application running which is hosted on a webfrontend (Server 2012 IIS).

These same users are experiencing an HTTP 400 error when connecting to that application URL.

I found KB2020943 which explains how to raise the allowed number of fields and requested bytes and applied this setting to our webserver.

After a reboot, these users are still experiencing this issue.

MaxTokenSize set at 47000

MaxFieldLength set at 62867

MaxRequestBytes set at 62867

Is there someone out there who has managed to solve this issue?

Thanks!

Filip