Sesam ICP is the centralized digital portal of the Catholic Institute of Paris. It provides access to administrative services, educational resources, and communication tools from a single web interface. The connection relies on a SSO authentication system that unifies access to all application components: Moodle, messaging, timetable, grade management, and administrative documents.
Technical prerequisites before connecting to Sesam ICP
The majority of connection failures to the portal do not stem from a forgotten password, but from a poorly configured browser environment. Before any authentication attempt, three points deserve systematic verification.
JavaScript and cookies must be enabled in the browser. The SSO authentication mechanism relies on redirects between the ICP CAS server and the Sesam portal. If JavaScript is disabled or third-party cookies are blocked, the login page loops indefinitely without ever completing.
Extensions like adblockers or anti-tracking tools can also interfere with the process. On Firefox, uBlock Origin sometimes blocks requests to the authentication domain. The solution is to temporarily disable the extension or whitelist sesamicp.fr.
Lastly, often overlooked: the use of a VPN. Some virtual private networks redirect traffic to servers located outside France, which can trigger additional security checks or server-side blocks. To successfully connect to the Sesam ICP portal without friction, prefer a direct connection or a VPN with a French exit node.
Sesam ICP credentials: format based on your university status
The login identifier does not have the same format for everyone. This distinction is a frequent source of confusion, especially at the beginning of the academic year when several thousand new accounts are activated simultaneously.
- Students use an identifier in the form [email protected] (for example: [email protected])
- Integrated teachers log in with [email protected] (first letter of the first name followed by the last name)
- Other teachers, including adjuncts, use [email protected]
- Administrative staff and external users receive an identifier of the type [email protected]
The password is the one defined during the initial account activation. This password is common to all services linked to the SSO: Sesam portal, Moodle platform, campus Wi-Fi, and digital library.
First activation and propagation delay
After the account is created by the administration, the propagation of rights can take several hours. Attempting to log in immediately after receiving the activation email often results in an “unknown account” error message. This delay, related to the synchronization between the LDAP directory and the various application components, is normal.
If the problem persists beyond 24 hours, the contact form accessible from the homepage of sesamicp.fr allows you to report the incident to the IT department.
SSO connection to Sesam ICP: operation and concrete advantages
The “ICP Login (SSO)” button on the authentication page triggers a unique identification process. Once authenticated via the CAS server, the browser retains a session token that allows access to all related applications without re-entering the password.
This mechanism has a direct advantage: only one password to remember for all university services. The timetable, grade consultation, assignment submissions on Moodle, and institutional messaging become accessible from a single entry point.
The classic login (manually entered username and password) remains available as an alternative. However, it requires authentication with each service change, making it less fluid on a daily basis.
When the session expires
The SSO token has a limited lifespan. After a period of inactivity (usually a few hours), the session expires and the portal redirects to the authentication page. This behavior is a standard security mechanism, not a malfunction. Properly closing your session via the logout button is still recommended, especially on a shared computer in a library or computer lab.
Resolving common connection errors on the Sesam portal
Three scenarios frequently arise in requests addressed to the ICP technical support.
The first: infinite redirect loop. The browser displays “this page has redirected too many times.” The main cause is a cookie conflict. Clearing the browser’s cache and cookies, then relaunching the connection, resolves the issue in the vast majority of cases.
The second: the message “incorrect username or password” even though the entered information seems correct. First, check that Caps Lock is not activated. Also, ensure you are using the correct identifier format corresponding to your status (see the previous section). A student entering [email protected] instead of [email protected] will be systematically rejected.
The third concerns password reset. The procedure goes through a “Forgot Password” link on the login page. A reset email is sent to the address associated with the account. If this secondary address has never been provided, only the IT department can intervene manually.
- Check cookies and JavaScript before any attempt
- Use the identifier format corresponding to your exact status
- Clear the cache in case of a redirect loop
- Contact support via the form on sesamicp.fr if the blockage lasts more than 24 hours
Most connection difficulties to Sesam ICP are resolved on the browser side, without support intervention. Keeping a browser up to date, with cookies allowed for the domain sesamicp.fr, avoids nearly all recurring blocks.