New AI Incident Response, Multi-Region Agents, and Custom-Domain Status Pages — May 2026
Monitor Features overview Vendor status Uptime & synthetic checks Certificate lifecycle Operate Incident management Live demo
By goal Replace your stack Why ServiceAlert Competitor comparisons Alternatives directory By signal Reliability hub   · Uptime rankings   · SLA compliance Outage map
Services
Check & scan SSL security grader Status checker DNS lookup Response time WHOIS lookup Calculators SLA calculator Downtime calculator Embed Status badges All tools →
Pricing
Guides Help center Uptime monitoring RUM & analytics Teams & shared monitors Developer API reference Status badges Learn Blog Outage reports FAQ Changelog
Dashboard

Slack Outage History

Uptime record, past incidents, and downtime history for Slack.

Checking current status...
93.4% uptime over 91 days
99.9% ✗ 99.5% ✗ 99% ✗ 95% ✗

90-Day Trend

Feb 25May 25

Monthly Uptime

Month Uptime Days Tracked Days with Issues
May 2026 76% 25 6
April 2026 100% 30 0
March 2026 100% 31 0
February 2026 100% 5 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)

Feb 24 Today
Operational Degraded Partial Outage Major Outage Maintenance No Data

Incident History

May 2026
Incident: Trouble uploading files and emojis in Slack
minor

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
minor

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
minor

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
minor

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
major

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
minor

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
minor

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
major

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
major

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
major

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
major

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
major

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
major

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
major

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
major

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
major

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
major

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
major

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
major

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.
major

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
major

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
View live status for Slack Browse all services