11:35AM - Slack has confirmed issues have been cleared. Please give us a call at 650-454-8850 if you continue to have any problems.
10:30AM - There is currently a Slack outage that's preventing login for users across multiple organizations. Slack is currently working on the issue but there is not currently an ETA. We will continue to update this post as more information becomes available.
For real-time updates you can also check Slack's official status site located here: https://status.slack.com/