Slack messages disappear or fail to deliver
Slack notifications appear then vanish, or messages are not delivered at all intermittently.
Signal
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Similar Problems
surfaced semanticallySlack Silently Stops Delivering New Messages Until App Is Restarted
On systems that have not been restarted in several weeks, Slack silently stops receiving new messages without any error or alert. Users only discover the failure when they restart the app and see unread messages that should have arrived earlier. This silent delivery failure is a high-severity reliability issue for teams that depend on Slack for real-time communication.
Slack Notifications Missed After Laptop Restart When App Fails to Reopen
Users miss Slack notifications when their laptop restarts and Slack does not automatically reopen. Critical messages go unseen until the app is manually launched.
Slack Notifications Fail to Alert Users Despite Being Enabled
Users report that Slack does not reliably deliver alerts for direct messages even when notification settings are turned on, causing them to miss important conversations. The failure occurs despite correct configuration, suggesting a platform-level delivery issue.
Slack Desktop Sometimes Fails or Takes Forever to Log In
The Slack desktop application sometimes takes a very long time to log in or fails to work at all.
Slack desktop notifications intermittently fail to appear
Users report that Slack notifications stop appearing for extended periods—spanning at least a week—affecting multiple people simultaneously. The issue is reproducible enough that affected users find others reporting it online, but there is no user-controlled fix. This is a platform reliability bug, not an unaddressed market gap.
Problem descriptions, scores, analysis, and solution blueprints may be updated as new community data becomes available.