Microsoft 365 suffers outage across the US

“We’re investigating an issue affecting access to multiple Microsoft (MSFT) 365 services. We’re working to identify the full impact and will provide more information shortly,” the company said in a tweet at 5:44 pm ET.

According to Down Detector, a website that tracks internet outages, users reported issues with logging in, server connection and Outlook. The downtime began around 5 pm ET for Office 365, according to the site, and is heavily affecting users in the California and Washington areas.

Microsoft attributed the outage to a recent change to the platform initially, but later indicated it was “not observing an increase in successful connections after rolling back a recent change. We’re working to evaluate additional mitigation solutions while we investigate the root cause.”