Monday August 21, 2023

Issue summary: On August 21, 2023 from 8:00 AM PDT to 8:51 AM PDT, less than 1% of users experienced trouble loading Slack. We determined that a recent code change on our back end was resulting in a higher than expected memory footprint, and that this combined with high traffic loads was causing these issues. We immediately rolled back this change, which resolved the issue for all affected users.

4:07 PM PST

We have identified the issue and have now restored full functionality of Slack for all impacted users. Less than 1% of users were experiencing trouble loading Slack. Thank you for your patience while we sorted this out.

8:59 AM PST

We have identified that a small number of users may be having trouble loading Slack. We’re still actively investigating this issue, but we don’t have any new information to share at this time. Thanks for sticking with us as we continue to work towards a fix.

8:37 AM PST

Users may be having trouble loading Slack. We're actively looking into this, and we'll report back as more information becomes available.

8:03 AM PST

Issue summary: On August 21, 2023 from 3:33 PM PDT to around 5:41 PM PDT, customers using the iOS app may have experienced issues sending messages. A code change inadvertently introduced an error in our message validation logic, preventing the iOS app from sending messages on a first attempt. Some customers may have been able to resend messages successfully. We identified and reverted the culprit code change, resolving the issue for all affected customers.

9:22 PM PST

We've resolved the issue and everyone should be able to send messages from the iOS app as normal once more. We appreciate your patience while we sorted this out.

5:29 PM PST

Some iOS users are encountering an error when sending messages from Slack. We're actively looking into this, and we'll report back within 30 minutes with an update. Thank you for bearing with us in the meantime.

5:04 PM PST