Monday December 9, 2019


Some customers are seeing an error when sending messages

Issue Summary:

On December 9 at 1:00 p.m. PST, we made a code change for a feature that lead to errors occurring for some customers when sending messages. We detected the the cause of the issue and started working on a fix at 11:17 p.m. PST. By December 10 12:02 a.m. PST, the fix was fully deployed to address the errors and full functionality was restored for affected customers.

11:08 PM PST

For those who were affected by the ‘9DCE38C9695E’ error message, we’re happy to report we’ve fixed this and messages can be sent once again. If the error persists, performing a hard refresh of the app with Cmd/Ctrl+Shift+R should get things in order.

We’re sorry for the interruption to your day and if you continue to experience any issues, please reach out to us at

1:01 AM PST

Some of our customers are seeing an 'Error: 9DCE38C9695E' message after attempting to send a message in Slack. We're currently looking into why this is happening and we'll update this page as soon as we have more information. We're sorry for keeping you away from your work.

11:31 PM PST

Services affected