On November 30, 2020 from around 10:31 a.m. to 2:10 p.m. PST, some users were unable to sign in with SSO.
A login-related code change we made resulted in errors that prevented some users from initiating new sessions. Some users were unable to sign in with SSO when signing in for the first time, or after being signed out. We resolved the issue by rolling back the code change.
12:30 PM PST
For those affected, you should be able to sign in with SSO. We truly appreciate your patience today. We'll be back with a summary of this issue.
2:26 PM PST
We believe we've identified the cause of this issue, and we're working on a fix. Thanks for your patience.
1:48 PM PST
Some users who sign in with single sign-on (SSO) are unable to login to Slack. We're currently investigating, and we apologize for the trouble. We'll be back with an update once we know more.
1:21 PM PST