Tuesday February 8, 2022


Some users encountering an error when trying to connect to Slack.

Issue summary:
From 9:55 AM PST until 12:26 PM PST on February 8, 2022, Firefox users may have encountered an error when trying to connect to or send messages in Slack.

We traced the cause of the issue back to code using a browser API version that we discovered isn't supported by Firefox yet. We resolved this by deploying a fix followed by a forced client refresh to ensure the impacted users would immediately regain access to Slack.

3:29 PM PST

A fix has been identified and rolled out for all users. If you are still experiencing issues with this please reach out to our Support team at feedback@slack.com

12:49 PM PST

We've shipped a potential fix to restore access to Slack for affected users, and are continuing to monitor the situation. We'll let you know once we have another update to share.

12:19 PM PST

We’ve identified what’s causing this issue and we're actively working to restore access to Slack for all users. We'll be back as soon as we have more information to share.

11:47 AM PST

Some users are having trouble connecting to Slack. We’re currently investigating and will let you know as soon as we know more.

11:14 AM PST

Services affected