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Outage in Slack

Trouble submitting workflow forms with file attachments on Android.

Resolved Minor
June 16, 2026 - Started about 1 month ago - Lasted 6 days
Official incident page

Incident Report

Summary AI Generated

Slack Android users on a specific app version were unable to submit workflow forms containing required file upload fields, as the Submit button became disabled after selecting a file. The issue was isolated to a single Android app version and did not affect iOS or web users. A fix was deployed via a new Slack Android app update released to the Google Play Store on June 17, with rollout expected to take several days to complete.

We are aware that some users on the Slack Android app are unable to submit workflow forms that contain a required file upload field. After a file is selected, the Submit button becomes disabled and the form cannot be completed. Users on Slack for iOS and Slack for web are not affected. We are actively investigating the issue and working to identify the root cause. We'll provide an update in 60 minutes or sooner if additional information becomes available.

Components affected
Slack Workflows

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Latest Updates ( sorted recent to last )
27 days ago - at 06/21/2026 05:33PM

We continue to monitor the rollout of the new version of Slack for Android. We'll provide another update when we have further information to share. Thank you for your continued patience. 

29 days ago - at 06/18/2026 10:30PM

The rollout of the new version of the Slack Android app is ongoing and may take up to several days to fully complete. We continue to monitor the rollout and will provide another update when we have more information to share. Thank you for your patience with us while we work through this. 

about 1 month ago - at 06/17/2026 07:38PM

A fix for this issue has been delivered in a new version of the Slack Android app, and rollout has now begun. Android users will start seeing the updated app version become available in the Google Play Store as the rollout progresses.Once updated, users who were experiencing issues submitting workflow forms containing a required file upload field will be able to do so successfully. We will continue to monitor the rollout and provide another update as additional information becomes available.

about 1 month ago - at 06/16/2026 04:48PM

We have identified the cause of this issue and confirmed it affects a small subset of users on a single version of the Slack Android app. Users on other Android versions, iOS, and web are not affected. A fix is already available and will begin rolling out to Android users tomorrow. We will provide an update as soon as additional information becomes available.

about 1 month ago - at 06/16/2026 03:50PM

We are aware that some users on the Slack Android app are unable to submit workflow forms that contain a required file upload field. After a file is selected, the Submit button becomes disabled and the form cannot be completed. Users on Slack for iOS and Slack for web are not affected. We are actively investigating the issue and working to identify the root cause. We'll provide an update in 60 minutes or sooner if additional information becomes available.

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