On October 16, 2018, at 8:06AM PT, we internally detected a problem with Duo Two Factor Authentication that may have prevented customers from authenticating into Slack. At 8:21AM PT, Duo posted a notice that they were investigating this issue. At 8:43AM PT, Duo resolved the issue and we called an all clear. If you have any trouble signing in to Slack, please get in touch at firstname.lastname@example.org.
12:54 PM PST
The issues with Duo that may have been preventing some folks from authenticating into Slack have now been resolved. Thanks for sticking with us.
8:45 AM PST
Duo is currently experiencing issues which could prevent users from authenticating into Slack. We're sorry about any inconvenience this causes, and we'll provide updates as soon as we have them.
8:06 AM PST