Substitutes assigned to the Versailles academy rarely receive a clear user manual for connecting to the Arena portal. Several days can pass between the moment the rectorate validates their contract and when they attempt to access their professional email or i-Prof, during which time the account may not be usable.
The activation procedure has evolved in recent years. The process now depends less on status (permanent, contractual, substitute) and more on the date the account was created in the academic system.
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Activation of the Arena Versailles account: the role of the establishment’s secretariat
Before even attempting to connect at id.ac-versailles.fr/arena, a substitute must ensure that their account exists. Creation does not happen automatically upon signing the contract. It is the secretariat of the assigned establishment that sends a creation form to the rectorate.
If this form has not been sent or if it contains an error (misspelled name, incorrect date of birth), the account simply does not appear in the academic directory. The substitute faces an error message without understanding that the problem lies upstream, at the administrative level.
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To find out the status of the procedure regarding the access to the Arena portal of the Versailles Academy, the first reflex is to contact the establishment’s secretariat directly and verify that the form has been properly transmitted. Without this step, no attempt to connect can succeed.
Connecting to Arena via OTP or NUMEN: what determines the method
The method of first connection to the Arena portal no longer solely depends on the agent’s status. The account creation date determines the authentication method. Recent accounts, created since the 2024-2025 school year, are set by default for activation via OTP (one-time code), sent by SMS or to the personal email address provided during the creation of the form.
Older accounts, on the other hand, remain on the classic scheme: academic identifier (often the first letter of the first name followed by the last name) associated with NUMEN as a temporary password.
This distinction often generates confusion. A substitute who has previously worked in the academy several years ago may have an old account with a NUMEN password, while a colleague who arrived at the same time but without an academic history will have to go through the OTP. Online guides that mention only one method mislead some users.
Identifying your connection method
- If you receive an SMS or email with a temporary code after clicking on “Connect via OTP” on the authentication page, your account has been created recently and follows the new protocol.
- If you have your NUMEN (sent by mail or by the rectorate) and the OTP option is not offered to you, your account follows the old scheme. The NUMEN then serves as a temporary password during the very first connection.
- In both cases, changing the password is mandatory upon the first successful connection, otherwise the account may be locked after a few days.
Macadam: the security service that substitutes discover too late
Once the first connection is made, Arena redirects to Macadam, the password management service of the Versailles academy. It is on this interface (accessible at ac-versailles.fr/macadam) that the substitute must finalize the security of their account.
Macadam allows you to set a permanent password and register a recovery phone number. This step, often perceived as optional, actually conditions the stability of access to the portal. Without a registered recovery number, any subsequent loss of password requires going through academic assistance, with a processing time that can reach 24 to 48 hours.
Field feedback varies on this point: some substitutes report a quick resolution by phone, while others describe email exchanges stretched over several days. The delay partly depends on the time of year, with back-to-school periods and movement times generating a surge in requests.
Why Macadam blocks certain accounts
A common case of blocking occurs when the substitute does not finalize the Macadam step during their first connection. The account remains in an intermediate state: it exists in the directory, but the temporary password expires. At this stage, neither the OTP nor the NUMEN works.
The only solution is to contact Macadam support or the rectorate’s IT service to request a complete reset. Finalizing Macadam upon the first connection avoids most reported blocks.
Services accessible from Arena for substitutes of the Versailles academy
Once the account is secured, the Arena portal provides access to a set of services grouped by sections. Substitutes do not have all the same rights as permanent staff, but the most commonly used tools are available to them.
- The professional email (Webmail), accessible from the “Intranet, Reference and Tools” section, is the official communication channel with the rectorate and the establishments.
- i-Prof, in the “Personnel Management” section, allows you to consult your file, update your CV, and track your assignments.
- Colibris Versailles, the HR management tool, provides access to digital pay slips and certificates.
- The management of temporary travel, useful especially for TZRs assigned for the year, allows you to enter your travel expenses between establishments.
Access rights to these services are automatically assigned based on the profile provided during account creation. A substitute who does not see certain sections in Arena should check with the secretariat that their profile has been correctly configured.
The Arena portal remains the only entry point to these tools for the Versailles academy. No official mobile application replaces it, and the interface has not been optimized for touch screens, making it difficult to use on smartphones. Using a desktop browser or a shortcut on the phone’s home screen remains the most reliable method for daily access.