The mailing list for users of the eduroam Configuration Assistant Tool (CAT)

[Stefan Paetow <address@concealed>]

It’s probably your “Identitätsschutz aktivieren” option. It’s set to ‘anonymous‘, not ‘address@concealed’.

 

If your RADIUS server blocks realm-less usernames, then yes, it’ll get blocked and authentication stops dead. Also, if you are using NPS as your server, you may want to check that you have a user called ‘anonymous’ (but disable it) in your directory, because NPS does look up the username used in the initial requests in the Active Directory.

 

Kind regards

 

Stefan Paetow

Federated Roaming Technical Specialist

eduroam(UK), Jisc

 

email/teams: address@concealed

gpg: 0x3FCE5142

 

For eduroam support, please contact the eduroam team via address@concealed and mark it for eduroam’s attention.

I am not available on Mondays and Fridays between 12:00 and 15:00 London time (UTC in winter, UTC+0100 in summer).

 

Note: I don’t expect a reply outside of your working hours, since I work internationally with colleagues in different nationalities with different religions, customs, and holidays. Reply when it is convenient for you.

 

Jisc is a registered charity (in England and Wales under charity number 1149740; in Scotland under charity number SC053607) and a company limited by guarantee registered in England under company number 05747339, VAT number GB 197 0632 86. Jisc's registered office is: 4 Portwall Lane, Bristol, BS1 6NB. T 0203 697 5800.

 

Jisc Services Limited is a wholly owned Jisc subsidiary and a company limited by guarantee which is registered in England under company number 02881024, VAT number GB 197 0632 86. The registered office is: 4 Portwall Lane, Bristol, BS1 6NB. T 0203 697 5800.

 

For more details on how Jisc handles your data see our privacy notice here: https://www.jisc.ac.uk/website/privacy-notice

 

 

From: <address@concealed> on behalf of "dominic.stalder" <address@concealed>
Reply to: "address@concealed" <address@concealed>
Date: Friday, 23 January 2026 at 13:19
To: "address@concealed" <address@concealed>
Subject: [[cat-users]] Question / SSID eduroam w/ and w/o CAT eduroam installer on Windows 11

 

Dear cat users mailing list

 

I am in the middle of troubleshooting an eduroam problem on Windows 11. I myself are experienced on the networking side, but only have limited knowledge of Windows (11). Because I simply cannot find the root cause or a solution to the problem, I am taking the liberty of contacting this mailing list...

 

In short, the problem only occurs in combination with Wi-Fi 6E (6 GHz):

 

1. if I let the WLAN profile for eduroam be configured by the CAT eduroam installer, everything works perfectly and the client can authenticate against the SSID immediately

 

2. if I manually configure the WLAN profile for eduroam with EXACTLY the same settings as with the CAT eduroam installer (1), the client fails to authenticate against the SSID or «runs» into a Dot1X authentication timeout (does not send any credentials) respectively. Those are the settings implemented by the CAT eduroam installer for our eduroam profile and also configured manually (sorry, is in German only):

 

 

 

 

 

 

 

My question would be: am I missing an important configuration in Windows 11 OR what else does the CAT eduroam installer configure in Windows 11, so it works with our eduroam SSID on Wi-Fi 6E as well? Any idea or recommendation would be appreciated.

 

Thanks a lot in advance and best regards

Dominic

 

 

 

 

 

 

_________________________________

Universität Bern

Abteilung Informatikdienste

 

Dominic Stalder

Network Engineer

 

Hochschulstrasse 6

CH-3012 Bern

Tel. +41 (0)31 684 38 18

address@concealed

www.id.unibe.ch

_________________________________

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