Using the New Outlook for Mac features in business environments
To better understand your issue, could you please provide the following information?
- Could you please confirm whether you can access your mailbox successfully using Outlook on the web (OWA)? If so, please also check Settings > Account > Storage in Outlook on the web and let me know whether your mailbox is close to or has reached its storage limit.
- Please check your Microsoft 365 subscription information here: https://portal.office.com/account/?ref=Harmony#subscriptions and let me know which license or subscription is listed for your work account.
- Could you please clarify what you mean by “deactivated”? Are you seeing a specific error message in Outlook on your iMac? If possible, please provide the exact error message or a screenshot with any personal or company-sensitive information removed.
There was a recent Exchange Online incident (EX1464935) that may have affected access to Exchange Online services, but it has now been mitigated. I recommend contacting your IT administrator to check the incident details and status in the Microsoft 365 admin center: admin.cloud.microsoft/#/servicehealth/:/alerts/EX1464935. You can also check the Microsoft service health status for the latest information.
I look forward to your response.