Outlook was reported down for Microsoft users across the UK on April 27, 2026, with people also flagging problems around the world as they tried to sign in. Microsoft said investigations were underway into a potential problem with users accessing Outlook.
Downdetector had seen nearly 800 people across the world report issues with Microsoft Outlook, and later showed nearly 900 reports of the outage. The most common complaint was logging in, which accounted for 64% of the reported problems. On X, users said they were being repeatedly prompted to re-enter their password.
That surge in complaints came with a sharp jump in Google Trends searches over the past hour for whether Outlook was down, a sign that many users were hitting the same problem at the same time. Downdetector, which tracks and reports outages for online services, pointed to an issue that appears to involve Microsoft Outlook account access and repeated login prompts.
Microsoft has not said what caused the disruption, but the pattern is clear: this was not a vague slowdown or a single-person glitch. It was a login failure that spread quickly enough to trigger hundreds of outage reports and push users online looking for answers. The next step is whether Microsoft can isolate the fault and restore access without leaving people locked out of their accounts for long.
