Changing Eduroam Certificates
Replacing root certificate on eduroam KTH - December 2nd
Time: Tue 2025-12-02 15.00 - 16.00
System/Service: Eduroam
On Tuesday, December 2nd of this year (2025), the certificate for eduroam will be replaced. The current certificate will become invalid (due to time constraints) shortly thereafter. Since SUNET (Geant) and thus KTH have a new certificate issuer, this means that the CA root certificate must also be replaced.
Who is affected: Employees and students
How the Service window affects you: This normally means that the clients will ask the users to approve the new certificate and enter their username and network secret again. To facilitate the configuration of clients and avoid problems with approving a new certificate, there is an installation tool adapted for the KTH environment - “eduroam CAT” (Configuration Assistant Tool), at Eduroam CAT . The tool contains the new (and old) CA root certificate. The tool is available for all common platforms.
It works great to install this new configuration even before December 2nd.
See Eduroam at KTH for more detailed instructions