Managing security settings and protections in Outlook on the web for business
To ensure I fully understand your situation and provide the most effective assistance, I’ll need a few additional details, such as:
Did this issue start today? Is anyone else in your organization affected as well, or only your account?
Have you already contacted your IT admin to verify the account and tried to reset it?
Additionally, I’d like to share an update on the connectivity issue affecting several Microsoft 365 services today. According to a Microsoft advisory (Incident ID: MO1550821), users may encounter difficulties connecting to or accessing various Microsoft 365 services, including Exchange Online, Microsoft Teams, SharePoint Online, Microsoft Copilot, and Microsoft Defender XDR.
Microsoft has identified that the affected infrastructure is experiencing high load in several regions, which is likely contributing to the connectivity failures. Microsoft is restarting and repairing the impacted portions of the infrastructure to restore capacity. It is also investigating an unexpected increase in a specific type of service traffic and evaluating options to redirect that traffic to alternative infrastructure to speed up recovery.
The incident is currently classified as “Service Degradation,” and Microsoft is actively working to investigate and mitigate the issue.
If you have Microsoft 365 admin privileges, you can view the details in the Microsoft 365 admin center here: https://admin.cloud.microsoft/?ocid=cmm45ut5ap0#/servicehealth/:/alerts/MO1550821
If you are only unable to connect, this incident is the likely cause. However, if you receive a message saying your password is incorrect, please contact your admin so they can help reset your account.
I hope this helps.