The academic email address of Versailles is now based on the Microsoft 365 infrastructure. This migration changes the way an external email client connects to the account: the classic authentication protocol (username + password entered directly in the settings) is replaced by an OAuth2 flow that goes through a web login window. Understanding this mechanism is a prerequisite for any successful configuration on Outlook or Gmail.
Why deleting the old account is often necessary
Modifying the settings of an already registered academic email profile on a phone or computer is not always enough. Reports published in 2026 indicate a recurring issue: the client retains the old authentication method in cache, which blocks the connection even after manually correcting the server fields.
The most reliable solution is to completely delete the academic account in the application (Outlook, Gmail, or any other client) and then recreate it from scratch. This recreation forces the software to negotiate a new OAuth2 token with the Microsoft 365 servers of the academy, instead of reusing a locally stored password.
A detailed guide allows you to configure the Versailles email on Outlook and Gmail by following each step of this profile recreation, with up-to-date server settings.
IMAP configuration and SMTP server for ac-versailles email
Before starting the account addition, you need to know the technical parameters expected by the Versailles academy. Two protocols are involved: IMAP for receiving and SMTP for sending.
- Incoming IMAP server: imap.ac-versailles.fr, port 993, SSL/TLS encryption. This protocol synchronizes folders between the server and the client, meaning that an email read on the phone also appears as read on the Versailles webmail.
- Outgoing SMTP server: smtp.ac-versailles.fr. The port and type of encryption must match those imposed by the academy (usually TLS). An error in this parameter prevents emails from being sent while allowing reception to function, which confuses many users.
- Login identifier: the full address in the format [email protected]. Do not use only the part before the at sign, or you will receive an authentication error on the first attempt.
On the desktop version of Outlook (classic), entering these parameters is done in the advanced account settings. On the newer version of Outlook for Windows, the software sometimes automatically detects the ac-versailles.fr domain and offers the Microsoft 365 flow without asking for the IMAP fields manually.
Academic Versailles address in Gmail on mobile: the Exchange flow
The Gmail app on Android can serve as a client for an academic account, but not via a standard IMAP addition. The path that works after the Microsoft 365 migration goes through the Exchange or Microsoft 365 option in the Gmail account addition menu.
Specifically, instead of selecting “Other” and then manually entering the IMAP servers, you should choose “Exchange and Office 365” when adding. Gmail then opens a Microsoft web login window where the user enters their academic credentials. It is this flow that generates the OAuth2 token accepted by the academy’s servers.
This distinction is absent from most guides available online, which still present manual IMAP configuration as the default method. However, a standard IMAP addition in Gmail fails for accounts already migrated to Microsoft 365, as the server rejects simple password authentication.
Special case: accounts not yet migrated
The switch to Microsoft 365 in the Versailles academy is gradual. Some staff still have an account on the old infrastructure. For these accounts, the traditional IMAP method with a password still works. The way to know which case you are in: if connecting to the portal messagerie.ac-versailles.fr redirects to a Microsoft login page, the account has been migrated.
Password troubleshooting and MACA-DAM portal
A connection failure on Outlook or Gmail does not always stem from incorrect server settings. The password itself may be expired or locked. The Versailles academy provides the MACA-DAM system to reset your password autonomously, without contacting support.
MACA-DAM works online and requires the NUMEN (ministerial identifier) to verify the identity of the requester. Without this number, self-service reset is impossible and you must go through the CARIINA support platform.
Here are some checks to perform before seeking support:
- Test the direct connection on the webmail ac-versailles.fr. If it fails as well, the problem is related to the password, not the email client.
- Check that the account is not locked after several unsuccessful attempts. A temporary lock usually lifts after a few dozen minutes.
- Ensure that the NUMEN is indeed the one associated with the current position, especially after a recent inter-academic transfer.
Enhanced authentication and one-time code
Since 2026, an additional layer of security is becoming widespread in the academic ecosystem. During certain logins, a one-time code is requested in addition to the password. This mechanism resembles the two-factor authentication already widespread in banking services. It may surprise during the initial setup of an external client, as the code is sent via SMS or through an authentication app, and the input time is limited.
The initial configuration on Outlook or Gmail remains the same, but the validation step in the Microsoft web window now includes this additional verification. Keeping your phone number up to date in the academic directory prevents getting stuck at this stage.
