{"SessionId":"c5a88baf-06f0-d743-9863-c39634ecce75","Timestamp":1748276325792,"Error":"INVALIDCREDENTIALS TEMPORARILYUNAVAILABLE"}

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{"SessionId":"c5a88baf-06f0-d743-9863-c39634ecce75","Timestamp":1748276325792,"Error":"INVALIDCREDENTIALS TEMPORARILYUNAVAILABLE"}

scotto thierry 25

Pour mon problème, c'est le calendrier qui ne fonctionne plus.

Ma boite mail fonctionne que sur Outlook classic.

Mon fournisseur est free.fr

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Camila Th 1,945 Microsoft External Staff Moderator

Hi @scotto thierry

Thanks for the details you shared.

Just to clarify — have you tried accessing your email online via the Outlook Web App (Outlook on Office.com), or are you using the webmail provided by your email provider (Free.fr)?

If you're unable to access your account via New Outlook or Outlook Web, it may be necessary to check with your email provider (Free.fr) to confirm whether they support modern authentication protocols required by those platforms.

Also, since your mailbox works fine in Outlook Classic, but the calendar doesn't sync, that’s expected behavior. Outlook Classic connects via IMAP, which only supports email — it does not support calendar synchronization. That’s why your calendar isn’t working in that setup.

We hope the details provided will assist you effectively.

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scotto thierry 25 Reputation points

2025-05-27T05:29:02.14+00:00

l'application courrier viens du Microsoft Store et fonctionner avant. Je comprend pas pourquoi il ne fonctionne plus maintenant. J'utilise les paramètres fournis part Free.fr recommandé en imap (port entrant 993, port sortant 465, SSL/TLS) ma version d'Outlook est Microsoft office professional plus 2021 fr-fr.

comment revenir à l'ancienne version Courrier (lien de téléchargement) ?
Camila Th 1,945 Reputation points Microsoft External Staff Moderator

2025-05-27T14:08:00.9933333+00:00
Hi @scotto thierry

It looks like you're having trouble signing into the New Outlook and want to switch back to the 2021 Outlook app. Unfortunately, our support only covers Office 365, and my testing environment does not include Office 2021. However, from my perspective view and my research, you may find these links useful for reinstalling Office 2021:

Download and install or reinstall Office 2021, Office 2019, or Office 2016 - Microsoft Support

Office 2021 Professional Plus download link - Microsoft Community

Download desktop version for Outlook 2019 - Microsoft Community

Before proceeding, it's recommended to uninstall the New Outlook first.

If you found this response helpful, please consider selecting "Accept Answer" and giving it an upvote. Should you have any further questions or require clarification, feel free to click "Comment" to continue the discussion.

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scotto thierry 25 Reputation points

2025-05-27T14:50:14.1366667+00:00

Merci pour votre réponse mais ça ne résous toujours pas le problème.

Pour une solution alternative, j'ai installer MY CALANDAR qui fonctionne à la place de Courrier que j'ai désinstaller. Mais problème non résolu. je vous remercie mais pour moi l'affaire est clause, pas de solution. Cordialement.
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