Wednesday August 28, 2024

Issue summary:
From August 27, 2024 at 8:30 PM PDT to August 29, 2024 at 11:00 AM PDT, some users were experiencing crashes in Slack for Android.

After a thorough investigation, we determined that we were not handling a specific subset of errors efficiently, resulting in app crashes for some users.

We rolled out a code change to improve the way we handle these errors, resolving the issue for all affected customers.

6:30 PM PST

We have deployed a fix and the Android app is no longer crashing after adding an @mention. Thank you very much for your patience while we worked to get this out the door.

We are still investigating lagging and freezing in the Android app, and we appreciate you bearing with this. You can follow the progress of this matter here:
https://slack-status.com/2024-08/a93569f745bc5717

6:46 PM PST

We're seeing signs of improvement, but we continue to monitor our health metrics as we work to roll out the fix. We appreciate your patience as our work continues on this issue.

4:57 PM PST

We're continuing to monitor our health metrics as we roll out the fix to resolve the app crashes.

Some users may still be experiencing degraded or lagging app performance as a result of the incident we shared here: https://slack-status.com/2024-08/a93569f745bc5717. We apologize for any confusion.

9:39 AM PST

We've identified the cause of the issue and are working on a fix. Additionally, we continue to monitor our health metrics to measure progress. We'll be back with another update once we have new information to share.

8:59 AM PST

We are still working hard to rectify the crashing behaviour when using @ mentions on Android. We're currently working towards a resolution and hope to see improvements soon. We will provide another update in 1 hour.

8:06 AM PST

Our investigation is still ongoing and we'll provide another update in 1 hour unless new information becomes available before then.

6:58 AM PST

We're still working hard to find the cause of the crashing behaviour. We'll be back with another update in 30 minutes and appreciate your patience.

6:26 AM PST

We're continuing to investigate the crashing behaviour. We appreciate your patience while we're investigating and we'll provide another update in 30 minutes.

5:56 AM PST

We're still investigating the crashing behaviour, we'll provide another update in 30 minutes.

5:26 AM PST

We are still exploring possible causes for the crashing behaviour when using mentions on Android. We apologize for the continued delay and will provide further updates in 30 minutes.

4:55 AM PST

We're working hard on identifying the root cause of the crashing behaviour. We'll be back with another update in 30 minutes. Thank you for your continued patience.

4:26 AM PST

We’re still investigating the root cause of this issue. We’ll provide another update in 30 minutes.

3:55 AM PST

We are still working to identify and resolve the crashing behaviour when mentioning users. No additional information to share just yet, but we'll be back with another update in 30 minutes.

3:25 AM PST

Our investigation is still ongoing. We'll return in 30 minutes with another update or once we have new information. We apologize for the inconvenience and appreciate your continued patience.

2:52 AM PST

No additional news to share on the crashing behaviour just yet, but we’re working on getting things back to normal as quickly as possible. We do apologise for the trouble.

2:22 AM PST

We're still working hard to find the cause of the crashing behaviour. We'll be back with another update in 30 minutes.

1:49 AM PST

Users on Android may be experiencing crashes when mentioning other users.

We're currently investigating and we'll provide an update in 30 minutes or as soon as we have additional information.

1:13 AM PST

Issue summary:
From August 27, 2024, at around 8:17 PM PDT until August 28, 2024, around 1:39 PM PDT, some Android users experienced performance issues while trying to use mentions.

We rolled back a feature flag related to the message composer on Android. This change unexpectedly introduced an error in backend logic when users attempted a mention, causing the UI to become overwhelmed and unresponsive. We identified the cause and re-enabled the feature, gradually rolling it out to users and resolving the issue for those affected.

We also determined that the app crash issue mentioned in our updates was unrelated to the performance issues. You can review our summary of that incident here: https://slack-status.com/2024-08/459426ecb123c558. We apologize for any confusion.

4:49 PM PST

We've identified the cause of the performance issues and are rolling out a fix in the next app update which is expected to roll out in the coming days.

We will continue to work directly with affected users through support tickets. For any additional questions, please contact us at feedback@slack.com.

We apologize for any inconvenience.

4:29 PM PST

A small number of Android users are experiencing a lagged performance of their Slack app. This issue is related to our investigation of app crashes here: https://slack-status.com/2024-08/459426ecb123c558, but we are investigating this issue separately.

We'll provide an update once we have news to share. We appreciate your patience while we sort this out.

We've adjusted this update to provide additional clarity on the issues.

9:04 AM PST

We're actively investigating an issue with mentions on Android. In particular, users may be experiencing slowness or errors on Android devices when using mentions. We'll provide another update as soon as we have more information to share.

8:37 AM PST

Issue Summary:
On August 28, 2024, from 11:13 AM PDT to 11:22 AM PDT, a small percentage of users in the Europe and Asia-Pacific region encountered issues with various actions including connecting to Slack, loading conversations, and sending messages.

We detected a spike in error rates which we traced back to an upstream provider conducting unplanned maintenance on a service many core Slack functions rely on.

To mitigate user impact, we temporarily diverted traffic from the affected databases. Once the error rates returned to normal and the upstream provider restored functionality, traffic was reverted back to the normal databases.

We apologize for any disruption to your work day.

4:38 PM PST

On August 28, 2024 from 11:13 AM PDT to 11:22 AM PDT, users might've had trouble connecting to Slack and sending messages.

11:49 AM PST