Single Sign On errors
DegradedSome users may have experienced trouble logging into Slack. We identified the trigger and resolved the issue and restored access. We’re sorry for the disruption.
Is Slack down?
Slack is up and running. Slack is team messaging with channels, calls and apps.
Last 90 days
79.72%
Estimated uptime
Estimated uptime
90 days agoToday
Worked out from the incidents Slack reported, so it is an estimate and not a measurement.
Slack reliability, last 90 days
10Incidents reported
0Full outages
2 h 46 minTypical duration
32 d 1 hLongest incident
Last incident: “Single Sign On errors”, 2 days ago.
Recent incidents
Slack for iOS closing unexpectedly when opening channels
DegradedWe've rolled out an updated version of the Slack iOS app to all impacted customers. Channels now open without the app closing unexpectedly. Users who are still experiencing this issue should update the Slack IOS app from the app store Store to resolve it. We apologize for the inconvenience and thank you for your patience.
Free Plan Customers Are Experiencing Message Failures
DegradedA messaging integration briefly caused some free-plan workspaces to exceed their daily messaging limit, blocking them from sending messages. We took action to lift the sending block for all affected free-plan workspaces, and have confirmed messaging is now restored. 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.
Some customers experiencing blurry image previews and download issues
DegradedSome customers experienced blurry images that couldn't be downloaded across all clients, affecting files uploaded before a recent file storage update. We deployed a fix restoring proper file access, and confirmed it resolved the issue for affected customers. 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.
Trouble loading Workspace-level Apps & Workflows settings page is returning blank pages
DegradedThis incident has been resolved. The engineering team has confirmed that the fix has been successfully deployed. We apologize for any disruptions this may have caused to your day.
Questions
Is Slack down right now?
Slack’s official status page says: All Systems Operational. This page checks it again when you load it, at most every 5 minutes.
When was Slack last down?
The most recent incident Slack reported was “Single Sign On errors”, 2 days ago (2026-10-14 00:23 UTC). None of its incidents in the last 90 days were a full outage.
What should I do if Slack is down?
Use a backup channel for anything urgent, and expect delayed messages or notifications to arrive in a burst after recovery.
Slack messages send but huddles won't connect?
Calls/huddles are a separate service area from Messaging on status.slack.com — audio/video can fail while text chat is fine.
Files won't upload but chat is fine?
'File uploads' is its own service area, as are Link Previews, Search and Notifications — each can degrade independently of messaging.
A Slack Connect channel is silent — same as a normal outage?
'Connections' (Slack Connect) is tracked separately — cross-org messaging can lag while your own workspace messaging is unaffected.
How do I tell if Slack is down for everyone or only for me?
If the status above is operational but Slack still fails for you, the cause is probably on your side: try another network, clear the cache, or check your own connection. If it shows a degradation or an outage, others are affected too.
How can I get alerted when my own site goes down?
OpenUptime checks your site every minute and sends an alert to Slack, Telegram, email or a webhook the moment it stops responding. It is open source and free to start.