Thursday May 7, 2020


Some customers are having trouble signing in through SSO

Issue Summary:

On May 07, 2020 from 5:20 p.m. PDT, some customers customers may have had issues signing in to Slack via SAML single-sign on (SSO). Existing sessions were unaffected. This was caused by a change that we made earlier in the day. We reverted the change and confirmed that SAML SSO logins began working as expected again. We called the all clear on May 07, 2020 at 8:02 p.m.

9:55 PM PST

For those affected by the trouble with SSO, we're happy to report that this has now been fixed. We apologise for keeping you away from your workspace.

8:05 PM PST

If you're affected by the issues with SSO (single sign-on), we’re starting to see some steady improvements and we're continuing to monitor this on our end. We'll confirm as soon as the SSO login flow is working as it should be.

7:56 PM PST

Some of our customers are having trouble signing in through SSO. We're currently investigating, and we'll keep you posted as soon as we have more information. We're sorry for the disruption.

7:26 PM PST

Services affected