Trouble submitting workflow forms with file attachments on Android.

This issue has been resolved. Android users who were experiencing issues submitting workflow forms containing a required file upload field can now do so successfully. A fix was delivered via a new update to the Slack Android app. Users who are still experiencing this issue should update the Slack app from the Google Play Store to resolve it. No other action is required. We apologize for the inconvenience and thank you for your patience.

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. 

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. 

On June 19, 2026 at 13:12 UTC, we completed a rollback of the configuration change, which resolved the notification delivery failure. Push notifications are now functioning normally for Android users. We apologize for how this incident affected you and your business. We will undertake a full investigation of the incident, establishing the technical trigger, the underlying cause, and preventive action to avoid a repeat in the future.

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. 

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.

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.