Users in UK, US and Australia Report Slack Down Problems

Slack down reports spread across the UK, US and Australia late on Wednesday, May 28, as users said the work platform was having problems a little before 11.30pm local time. The reports point to a broad service issue rather than a single local glitch.

UK Reports on Downdetector

By shortly before 11.45pm, at least 36 UK-based reports had been logged on Downdetector, a real-time technology monitoring service. For users trying to send messages or share files inside Slack, that kind of spike can mean the difference between a brief annoyance and a stalled work chat.

User Messages Inside Slack

One user wrote on Downdetector, "Currently getting 'Couldn't send message' when I attempt to attach a screenshot to a message in Slack. My colleagues are also having this issue." That report matches the pattern in the wider outage, where multiple people in different countries were seeing the same platform problem at nearly the same time.

Slack Outage Update

This is an ongoing story, and updates will be provided. For now, the practical takeaway for affected users is simple: the problem is not limited to one country, and the report volume in the UK suggests the issue was already moving beyond an isolated complaint.