Hello NassBee,
Since Copilot worked yesterday but Outlook now says “Copilot is not supported for this account,” could you confirm:
- Are you using classic Outlook, new Outlook, Outlook on the web, or the mobile app?
- Does Copilot still appear in another Microsoft 365 app, such as Word?
- If this is classic Outlook, what version and build are shown under File > Office Account > About Outlook?
Microsoft has documented a current issue where Copilot entry points disappear in classic Outlook build 20026.20182 and later, but that may not be the same issue as the account-support message you are seeing.
These details will help determine whether this is the documented Outlook issue or whether the subscription account is no longer being recognized correctly.