Slack Outage History
Uptime record, past incidents, and downtime history for Slack.
Checking current status...
90-Day Trend
Monthly Uptime
| Month | Uptime | Days Tracked | Days with Issues |
|---|---|---|---|
| July 2026 | 100% | 9 | 0 |
| June 2026 | 36.7% | 30 | 19 |
| May 2026 | 74.2% | 31 | 8 |
| April 2026 | 100% | 21 | 0 |
Uptime is calculated from daily worst-status snapshots. A day with any non-operational status counts as a day with issues.
Daily Status (Last 91 Days)
Apr 10
Today
Operational
Degraded
Partial Outage
Major Outage
Maintenance
No Data
Incident History
June 2026
Incident: Chat functionality unavailable on Slack Help page
Started: Jun 26, 10:09 AM
resolved
We've resolved the issue and users can now use the Chat feature on the Slack Help Center. We performed a configuration change, which brought the feature back online and have validated that it's functioning as expected. We apologize for how this incident may have affected you and your business.
Jun 26, 10:09 AM
Incident: Trouble submitting workflow forms with file attachments on Android.
Started: Jun 21, 5:33 PM
resolved
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.
Jun 21, 5:33 PM
Incident: Trouble loading SSO configuration settings for some workspace admins
Started: Jun 18, 4:14 AM
resolved
We have successfully deployed the fix to production and the issue is resolved. The Admin SSO and Authentication Configuration page for standalone workspaces should now display the correct settings. If you continue to see outdated information, refresh the SSO Admin page to load the latest changes.
Jun 18, 4:14 AM
Incident: Trouble performing some actions
Started: Jun 17, 1:07 AM
resolved
This issue is now resolved for all users.We apologize for any disruptions to your day.
Jun 17, 1:07 AM
Incident: Slack Messaging issue
Started: Jun 16, 1:19 AM
resolved
Some users may have been unable to edit or delete messages in certain channels. We identified and resolved the issue. We apologize for how this issue affected you and your business.
Jun 16, 1:19 AM
Incident: Child windows displaying content at half height
Started: Jun 11, 11:15 PM
resolved
We've validated that the fix resolved the issue and child windows are now displaying content as expected. You may need to reload Slack using Command + Shift + R (Mac) or Ctrl + Shift + R (Windows/Linux) in order for this fix to be reflected on your end. We're sorry for the disruption this caused to your day.
Jun 11, 11:15 PM
Incident: Trouble with Gmail add-on Integration
Started: Jun 11, 6:39 AM
resolved
We've resolved the issue that prevented customers from using the Slack Gmail add-on. The fix has been successfully deployed; health metrics have stabilized, and the Gmail add-on is now fully operational for all affected users.We apologize for any inconvenience this may have caused.
Jun 11, 6:39 AM
Incident: Trouble adding multiple users to channels
Started: Jun 9, 8:18 PM
resolved
This issue is now resolved for all users.Current status and recent actions taken: We identified the trigger for this issue and a fix was deployed. After a period of monitoring, we have concluded that there is no further impact to users.Previous impact to end users: Some users may have experienced issues when attempting to add multiple users to channels and received an error indicating a failure to identify team members. This could have caused subsequent workflows not to t...
Jun 9, 8:18 PM
Incident: Some users unable to sign in
Started: Jun 8, 7:35 PM
resolved
The issue affecting SMS-based two-factor authentication for users in EMEA has been resolved, and all services are now functioning as expected. We have adjusted configuration settings to restore normal service and will continue to monitor the situation to ensure stability. We apologize for how you and your business may have been affected by this. We will perform a full investigation of the incident, confirming the technical trigger, the underlying cause, and preventive ac...
Jun 8, 7:35 PM
Incident: Administrators may experience errors in member management.
Started: Jun 3, 5:35 PM
resolved
The Slack engineering team identified the cause as a recent update that introduced a code change which caused the invite modal to fail when accessed from the Admin page. We rolled back the change and have confirmed the fix is fully deployed and the issue is resolved.Some workspace Admins were unable to add new members to their workspaces via the Manage Members Admin page. In addition, some users attempting to invite people from this page may have encountered an error or b...
Jun 3, 5:35 PM
Incident: Trouble connecting or loading Slack
Started: Jun 3, 1:38 AM
resolved
Our work on this issue is still ongoing.Current status and actions being taken: we're investigating an issue where some Slack users are experiencing thread loading, client booting, and message delivery failures. We've identified several potential contributing factors and are working to confirm the root cause. Further updates will be shared as the investigation continues.We'll provide another update in 30 minutes until the impact is resolved for all users.
Jun 3, 1:38 AM
Incident: Connectivity Issues Affecting Some Users in Europe
Started: Jun 2, 4:16 PM
resolved
Current status: The Slack engineering team investigated connectivity issues that affected some users between approximately 13:30 and 14:00 UTC on June 2, 2026. The issue has been resolved and no further impact has been reported.Scope: Some users, primarily in Europe, may have experienced difficulty loading or sending Slack messages during this windowWe apologize for any inconvenience this may have caused.
Jun 2, 4:16 PM
Incident: Partial Degradation Impacting Usergroups
Started: Jun 1, 3:05 AM
investigating
Our investigation has determined that the issue is isolated to a single customer environment and is not impacting the broader service. As a result, this incident will be removed from the status page and we will continue to work directly with the affected customer to address their issue.
Jun 1, 3:05 AM
May 2026
Incident: Issues affecting workflows, message edits, channel renames, apps, and channel creations
Started: May 28, 1:03 AM
resolved
Teams continue to implement configuration adjustments and deployment fixes to resolve the issue. All features except for Workflows and Messaging should be recovered. Some lingering impact remains. Users may notice:Empty pills instead of @-mentionDelayed reacjiMismatch in Channel member count and channel membershipSlow loading of messages, user avatars, and unfurlsWe are working with urgency to improve platform stability and reduce impact. We’ll provide an update in the ...
May 28, 1:03 AM
Incident: Severe Latency Impacting All Slack Services
Started: May 27, 11:02 PM
investigating
The Slack Engineering team is currently investigating severe latency impacting all Slack services. We'll provide an update as soon as we have more information to share and apologize for any inconvenience this is causing.
May 27, 11:02 PM
Incident: Trouble uploading files and emojis in Slack
Started: May 19, 10:27 PM
resolved
This issue is now resolved for all users.Current status and recent actions taken: The fix has successfully deployed, and our health metrics have stabilized. The issue is now fully resolved for all affected users. Scope: This wasn't affecting any specific region, but a percentage of users may have been affected globally.Previous impact to end users: Some users may have experienced slowness when uploading files and emojis in Slack. Attaching or sending files may have taken...
May 19, 10:27 PM
Incident: Huddle AI summaries not being generated
Started: May 18, 2:53 PM
resolved
Some Slack users experienced issues where Huddle AI summaries weren't being generated. Users also appeared to be showing as in a huddle after it had ended.We've fixed both issues. Missing summaries were restored, and the system responsible for showing huddle statuses has been refreshed. If you still notice any users appearing stuck in a huddle, please contact Slack Support. We apologize for the inconvenience and any impact this may have had.
May 18, 2:53 PM
Incident: Issues affecting file uploads, message edits, channel renames, and channel creations
Started: May 14, 3:34 PM
resolved
The issue affecting multiple features, including file uploads, message edits, and channel management, has been resolved. A fix has been fully deployed, and all systems are functioning normally. If you are still experiencing any trouble, please perform a hard reload of Slack by pressing Command + Shift + R (Mac) or Ctrl + Shift + R (Windows/Linux). Mobile users should fully close and relaunch the app. We sincerely apologize for the disruption to your day and appreciate ...
May 14, 3:34 PM
Incident: EKM customers were previously experiencing issues with channel loading and message delivery
Started: May 11, 9:48 PM
resolved
Users who rely on Enterprise Key Management (EKM) may have experienced elevated latency and errors across messaging, channel loading, workflows, and file operations starting around 5:55 AM PDT on May 11, 2026. Impact was mitigated and the incident was brought under control at 9:16 AM PDT on May 11, 2026.We've deployed fixes addressing the root cause of the elevated encryption key request load. If you continue to experience trouble, please reload Slack using Command + Shif...
May 11, 9:48 PM
Incident: EKM customers experiencing issues with channel loading and message delivery
Started: May 11, 2:09 PM
investigating
We’re investigating this issue:Current status and actions being taken: We’re seeing renewed, elevated error rates and latency affecting customers using Enterprise Key Management (EKM). Affected customers may experience issues sending messages and loading some channels. Our team is actively investigating this issue.Estimated time to resolution: No ETA at this time.Scope: This isn't affecting any specific region, but a percentage of Enterprise Key Management customers m...
May 11, 2:09 PM
Incident: Scheduled Grid Migrations are experiencing extended downtime
Started: May 8, 5:44 PM
resolved
This issue is now resolved.Current status and actions being taken: We identified database write throttling as the cause of the stalled grid migrations. We applied a drop rule for jobs that were stuck in a retry loop, which has restored normal migration processing. Scope: A small number of enterprise users undergoing grid migrations experienced extended delays in accessing Slack. Current impact to end users: Affected users may have experienced an inability to access Slac...
May 8, 5:44 PM
Incident: Slow behaviour in Slack
Started: May 4, 5:37 PM
resolved
This issue is now resolved for all users.Current status and recent actions taken: A fix has been deployed that resolved the underlying cause of this issue. Our health metrics have returned to normal levels and workflows are running as expected.Scope: Users in the EU region — primarily teams based in Central Europe — experienced elevated workflow failure rates.Previous impact to end users: Users may have experienced workflows failing to run, with the first step remaini...
May 4, 5:37 PM
Incident: Slack Search Feature Disruption - Japan region
Started: May 1, 1:50 AM
investigating
At 23:20 UTC, April 30, 2026, a feature disruption began affecting the Slack Search feature for a subset of customers in Japan region. As a result, users were unable to use Search functionality within Slack.We identified that infrastructure changes to our Search cluster caused a number of internal search nodes to become unavailable, which prevented Search queries from routing correctly. We implemented a series of remediation steps, including increasing cluster capacity an...
May 1, 1:50 AM
April 2026
Incident: Users May Not Receive Notifications on Slack Thread Replies
Started: Apr 27, 8:36 PM
investigating
We’ve successfully performed a rollback in the production environment, and all systems are now functioning as expected. Users should no longer experience any issues with thread replies not generating a notification banner.We apologize for any inconvenience and appreciate your patience.
Apr 27, 8:36 PM
Incident: Slack Threads Not Loading
Started: Apr 23, 9:50 AM
investigating
Further investigation confirms that the issue impacting Thread loading has been self- resolved, and our team will continue to investigate to ensure that this doesn’t reoccur. We apologize for the trouble today and thank you for your patience.
Apr 23, 9:50 AM
Incident: Custom status not expiring
Started: Apr 21, 3:47 PM
investigating
ResolvedThis issue is now resolved for all users.Current status and recent actions taken: Custom statuses set to expire at a specific time are now clearing as expected. The issue self-resolved when the next scheduled expiration job successfully processed the affected users. Scope: Some external users globally were affected. Users on desktop were impacted; the issue was not reproducible internally or across test workspaces.Previous impact to end users: Some users may ...
Apr 21, 3:47 PM
Incident: Users may experience delays due to increased load on bychan keyspace affecting system performance
Started: Apr 20, 9:05 AM
investigating
This issue is now resolved for all users.Current status and recent actions taken: We've completed rolling back the change to address the issue impacting core Slack functionality, including launching Slack, sending messages, loading threads, and other related actions. Scope: All Slack enterprise customers.Previous impact to end users: Users experienced issues with channel-related operations, including delays or failures when loading channels or retrieving channe...
Apr 20, 9:05 AM
Incident: Trouble Sending Messages
Started: Apr 10, 9:44 PM
investigating
This issue is now resolved for all users.Current status and recent actions taken: After monitoring system performance and infrastructure stability, we have confirmed that all Slack features are operating within expected levels. Users should no longer experience any issues when sending messages. Scope: This issue wasn't affecting any specific region, but a percentage of users may have been affected globally.Previous impact to end users: Some users may have experienced...
Apr 10, 9:44 PM
Incident: Trouble with Slackbot and AI-powered features
Started: Apr 9, 7:29 PM
investigating
Current status and recent actions taken: After monitoring system performance and infrastructure stability, we have confirmed that all Slack features are operating within expected levels. This incident is now resolved and users should no longer experience any issues with Slackbot, AI Features, or workflows.We apologize for any disruptions to your day.
Apr 9, 7:29 PM
Incident: Slackbot button in the top navigation is disappearing
Started: Apr 1, 2:41 PM
investigating
This issue is now resolved for all users.Current status and recent actions taken: We've completed deploying the fix to address the issue affecting the Slackbot button in the top navigation bar. The Slackbot button is now working as expected. Scope: The issue was introduced for any users on build 121247.Previous impact to end users: The Slackbot button in the top navigation bar may not have been visible to users.Required resolution steps: Users who are stil...
Apr 1, 2:41 PM
March 2026
Incident: Issue with Sending and Receiving Messages
Started: Mar 30, 1:17 AM
investigating
Following a period of monitoring, our engineering team called this incident resolved as of 01:10 UTC, March 30. We apologize for any inconvenience this issue has caused to users.
Mar 30, 1:17 AM
Incident: Issues while sending messages and loading message history is impacting some users
Started: Mar 28, 5:39 AM
investigating
This issue is now resolved for all users.Current status and recent actions taken: We identified a paused job that may have been contributing to the high utilization. This was unpaused, which restored resource availability.Scope: This only affected a small subset of users.Previous impact to end users: Some users may have experienced issues while sending messages and loading message history in Slack between 20:14 PDT and 22:14 PDT.We apologize for any disruptions to yo...
Mar 28, 5:39 AM
Incident: Trouble connecting to Slack
Started: Mar 26, 4:36 PM
investigating
Intermittent errors when sending messages have been resolved. Additionally, some customers may see inaccurate notification badge counts which can be resolved with a hard reload to clear temporary local cache. Apologies for the trouble today and thank you for your patience.
Mar 26, 4:36 PM
Incident: Authorization Failure Errors Connecting to the Slack MCP Sever
Started: Mar 23, 3:46 AM
investigating
We have resolved the issue that was causing users to experience authorization failures when connecting certain third-party integrations to Slack.We apologize for any inconvenience this may have caused and thank you for your patience.
Mar 23, 3:46 AM
Incident: Intermittent SSO login errors accessing Slack workspace.
Started: Mar 9, 7:17 PM
investigating
This issue is now resolved for all users.Current status and recent actions taken: We identified the cause as a login routing component that had incorrect entries, which prevented users from being directed to their workspace correctly. A fix has been deployed to address this issue. Previous impact to end users: Users attempting to log in via SSO may have encountered errors requiring them to refresh their browser multiple times before successfully accessing...
Mar 9, 7:17 PM
Incident: Issues with App Mentions, Grid Migrations, and Notifications
Started: Mar 6, 4:44 PM
investigating
This issue is now resolved for all users.Current status and recent actions taken: The issue is now resolved, and users should no longer be experiencing any trouble with when using app mentions, migrations, and push notifications. Enterprise Migrations should also be completing as expected.Scope: This issue wasn't affecting any specific region, but a percentage of users may have been affected globally.Previous impact to end users: Developers may have experienced issues in ...
Mar 6, 4:44 PM