Hier die Original Status Nachricht von Microsoft:
Title: Users may be unable to access multiple Microsoft 365 services
User Impact: Users may be unable to access multiple Microsoft 365 services.
More info: We've received reports that the following services are impacted: -Microsoft Teams -Exchange Online -Outlook -SharePoint Online -OneDrive for Business -Microsoft Graph
Current status: We've identified a potential networking issue and are reviewing telemetry to determine the next troubleshooting steps.
Scope of impact: Any user serviced by the affected infrastructure may be unable to access multiple Microsoft 365 services.
Next update by: Wednesday, January 25, 2023, 10:00 AM (9:00 AM UTC)