# AAI Infrastructure **URL:** https://forum.clarin.eu/c/aai-infrastructure/7.md [Latest](https://forum.clarin.eu/latest.md) · [Categories](https://forum.clarin.eu/categories.md) · [Tags](https://forum.clarin.eu/tags.md) --- ## [About the AAI Infrastructure category](https://forum.clarin.eu/t/about-the-aai-infrastructure-category/55)
**Author:** [@andmor](https://forum.clarin.eu/u/andmor)\ **Replies:** 0
Topics about the CLARIN Authentication and Authorization Infrastructure including but not limited to: CLARIN Service Provider Fedetation SAML metadata setup and distribution Service Providers and Identity Providers CLA… --- ## [Identity Providers with Known Issues](https://forum.clarin.eu/t/identity-providers-with-known-issues/1542)
**Author:** [@dieter](https://forum.clarin.eu/u/dieter)\ **Replies:** 0\ **Last updated:** [24 August 2026 12:55 UTC](https://forum.clarin.eu/t/identity-providers-with-known-issues/1542 "2026-08-24T12:55:58Z")
Below you can find a list of all universities for which we know there has been some problem logging into CLARIN services at some point in the past which has not been resolved so far. The second column lists the domain of… --- ## [Introducing the CLARIN Single sign-on proxy](https://forum.clarin.eu/t/introducing-the-clarin-single-sign-on-proxy/1216)
**Author:** [@andmor](https://forum.clarin.eu/u/andmor)\ **Replies:** 4\ **Last updated:** [7 April 2026 10:18 UTC](https://forum.clarin.eu/t/introducing-the-clarin-single-sign-on-proxy/1216 "2026-04-07T10:18:12Z")
The CLARIN Single Sign-On (SSO) SAML proxy is now entering its production testing phase We are modernizing our Service Provider Federation (SPF) infrastructure to make it more reliable, flexible, faster, and easier to… --- ## [Improvements on submission facility for SAML metadata](https://forum.clarin.eu/t/improvements-on-submission-facility-for-saml-metadata/1232)
**Author:** [@andmor](https://forum.clarin.eu/u/andmor)\ **Replies:** 0\ **Last updated:** [9 February 2026 13:53 UTC](https://forum.clarin.eu/t/improvements-on-submission-facility-for-saml-metadata/1232 "2026-02-09T13:53:25Z")
We are pleased to announce a series of significant improvements to the way CLARIN Service Provider (SP) operators submit and maintain their SAML metadata. These changes make it easier to update x509 certificates, correct… --- ## [Post-mortem incident with CLARIN Identity Provider](https://forum.clarin.eu/t/post-mortem-incident-with-clarin-identity-provider/1226)
**Author:** [@andmor](https://forum.clarin.eu/u/andmor)\ **Replies:** 0\ **Last updated:** [5 February 2026 19:15 UTC](https://forum.clarin.eu/t/post-mortem-incident-with-clarin-identity-provider/1226 "2026-02-05T19:15:38Z")
Dear members of the CLARIN community, Yesterday afternoon an incident occurred in our CLARIN website account Identity Provider (IdP), resulting in a service disruption during the night of 05‑02‑2026 and the morning of 0… --- ## [Signing key for CLARIN SPF metadata feeds changed](https://forum.clarin.eu/t/signing-key-for-clarin-spf-metadata-feeds-changed/1225)
**Author:** [@andmor](https://forum.clarin.eu/u/andmor)\ **Replies:** 0\ **Last updated:** [5 February 2026 15:26 UTC](https://forum.clarin.eu/t/signing-key-for-clarin-spf-metadata-feeds-changed/1225 "2026-02-05T15:26:36Z")
Dear members of the CLARIN Service Provider Federation, Due to a technical error \[1\], we have replaced the signing certificate used for the metadata feeds we distribute. This affects all metadata feeds available at: … --- ## [Shibboleth SP updated to version 3.5.0](https://forum.clarin.eu/t/shibboleth-sp-updated-to-version-3-5-0/738)
**Author:** [@welbers](https://forum.clarin.eu/u/welbers)\ **Replies:** 0\ **Last updated:** [17 March 2025 16:13 UTC](https://forum.clarin.eu/t/shibboleth-sp-updated-to-version-3-5-0/738 "2025-03-17T16:13:38Z")
Today our Shibboleth SP was updated to v3.5.0 to mitigate the vulnerability reported in https://shibboleth.net/community/advisories/secadv\_20250313.txt. If you are running a Shibboleth Service Provider yourself, please … --- ## [Lancaster University not releasing attributes](https://forum.clarin.eu/t/lancaster-university-not-releasing-attributes/86)
**Author:** [@dieter](https://forum.clarin.eu/u/dieter)\ **Replies:** 1\ **Last updated:** [26 February 2024 12:04 UTC](https://forum.clarin.eu/t/lancaster-university-not-releasing-attributes/86 "2024-02-26T12:04:08Z")
After some interaction with a user and the tech support of Lancaster University it turns out their Identity Provider is by default not releasing any attributes to “unknown” Service Providers: We don’t currently release… --- ## [Clarification on SURFconext's email to Service Provider operators about "Metadata Signing Key Update for SURFconext Service Providers"](https://forum.clarin.eu/t/clarification-on-surfconexts-email-to-service-provider-operators-about-metadata-signing-key-update-for-surfconext-service-providers/56)
**Author:** [@andmor](https://forum.clarin.eu/u/andmor)\ **Replies:** 0\ **Last updated:** [21 December 2023 15:59 UTC](https://forum.clarin.eu/t/clarification-on-surfconexts-email-to-service-provider-operators-about-metadata-signing-key-update-for-surfconext-service-providers/56 "2023-12-21T15:59:04Z")
On December 2023 SURFconext (the Ducth NREN) sent the following email to all operators of SPs registered at their federation: Dear Service Provider, You receive this message because you are listed as a contact for the …