Are you trying to use Slack right now? Well, you might be running into issues.
As of 9:35 a.m. Monday, May 11, there are more than 700 reports on downdetector.com with users reporting issues.
The biggest issue it saw was with messages, where more than half of the concerns were raised. Some couldn’t get on the app, while others couldn’t log in.
The problem popped up just before 10 a.m. EST, so it could be just a short outage. There is no further information on the outage at this time.

