IONOS US incident
Disruption in logging into the Outlook Web App
IONOS US experienced a minor incident on August 19, 2025 affecting Microsoft Exchange, lasting 50m. The incident has been resolved; the full update timeline is below.
Affected components
Microsoft Exchange
Update timeline
- identified Aug 19, 2025, 04:34 PM UTC
We have received reports that some customers may be experiencing login issues with their Exchange2019 email address via the Outlook Web App.
- resolved Aug 19, 2025, 05:25 PM UTC
The issue has been resolved.