Reports of issues began around 8 a.m. ET and spiked around 12:30 p.m. ET, according to DownDetector (which shares a parent company with Mashable). Reported outages have since tapered off, suggesting the issue might be resolved soon.

Microsoft said it was able to resolve all of its issues with Outlook and Teams as of just after 3 p.m. EST Tuesday, more than a day after thousands of users started to report outages early Monday morning.

The outage was another jarring reminder that the move to cloud services increases dependence on outside vendors that periodically fail to function. While security experts have lon