Slack has gone down, with users unable to send or receive messages.
The workplace chat app has become one of the central ways that remote offices collaborate as they work amid lockdowns.
Slack acknowledged the problems in an update to its official status page.
“Some people may be experiencing slow performance and trouble sending messages in Slack,” it reads.
“We’re currently investigating and will have more information shortly. Thank you for your patience.”
Tracking website Down Detector saw a huge surge in the number of people reporting problems with the app, with some saying they were unable to connect at all and others saying messages were not sending.
Issues appeared to be prevalent across the world. While they were concentrated on the east coast of the US, Europe and Japan, that is probably just a result of where the company’s users are based and which are online.