This issue is now resolved for all users.Current status and recent actions taken: We deployed a series of configuration adjustments and infrastructure fixes to restore services. Messaging, Workflows, Apps, and Connections were progressively restored over the last several hours. Some users continued to experience permissions-related issues, including inability to manage channels and Canvas edits not saving, as a result of residual stale cache data. Cache deployment activities completed at 14:13 UTC on May 28, 2026, fully resolving the issue. Scope: This issue affected Slack users globally.Previous impact to end users: Slack users experienced difficulties accessing Slack features, including Messaging, Workflows, Apps, Integrations, APIs, Canvas, and Connections, beginning at 22:21 UTC on May 27, 2026. Following an infrastructure change, a cascading scheduling failure caused widespread service impact across all regions and clients. Slack services largely returned to normal operational levels at 05:45 UTC on May 27, with residual impact that remained during the deployment. A brief issue with Canvas surfaced at 10:00 UTC on May 28‌ that lasted until approximately 12:30 UTC.  Required resolution steps: No steps required.We apologize for any disruptions to your day. We'll undertake a full investigation of the incident, establishing the technical trigger, the mechanism of failure, and preventative measures to avoid further disruptions. 

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. 

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 longer than expected — or failed to complete in a timely manner.Required resolution steps: No additional steps are required.We apologize for any disruptions to your day.

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.

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 your patience while we worked to sort this out.

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 + Shift + R (Mac) or Ctrl + Shift + R (Windows/Linux). We apologize for the disruption and thank you for your patience.

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 Slack during their migration window. Known workarounds: No workarounds needed at this time.We apologize for how this incident affected you and your business. 

From 12:07 PM PST until 1:30 PM PST on January 14, 2026, some users were unable to add payment methods to their Slack billing pages.A recent backend change to our payment processing configuration unexpectedly added a new required field, causing errors when attempting to add the methods. We reversed the field requirement, resolving the issue for all users.

This issue is now resolved.Current status and recent actions taken: Affected users may have experienced performance issues in Slack.Scope: This issue did not affect any specific region, but a small percentage of users may have been impacted globally.Previous impact to end users: The majority of errors were retired successfully, but small number of users may have experienced errors when performing various tasks in Slack. Required resolution steps: No steps required.We apologize for any disruptions to your day

Starting around 11:50 AM PST until around 3:15 PM PST on January 8, 2026, some users experienced a variety of performance issues in Slack, such as significant delays or a total inability to send and receive messages, load channels, or view threads.We traced this to a routine backend configuration job which unexpectedly caused some services to reload or become unresponsive. To mitigate the impact, we promptly paused the problematic job and restarted the affected services, resolving the issue for all users.

Between 1:05 PM and 5:26 PM PST on December 23, 2025, some users may have encountered a "Something's fishy!" error when attempting to load message threads.We traced this to a backend job that consumed an excessive amount of system resources, leading to a portion of a database becoming unresponsive. To mitigate, we optimized the resource allocation for these background tasks and restarted the affected database segments, resolving the issue for affected users.

Starting at around 7:00 AM until 12:10 PM PST on December 15, 2025, some users may have experienced issues triggering or using workflows containing the Jira connector or the Jira Cloud app in Slack.An upstream provider encountered an issue that resulted in trouble using the Jira connector. Once the upstream provider resolved the issue, the app returned to normal functionality.

From 7:12 AM to 4:50 PM PST on December 8, 2025, some users encountered a "Something's fishy!" error when loading  threads or experienced delays or a blank screen when loading specific channels in Slack.We identified the cause as a recent configuration change that triggered unexpected rate limiting on backend components responsible for fetching message data for threads. We reverted the problematic change, resolving the issue for all users.

Beginning around 7:45 PM PST until around 8:11 PM PST on December 4, 2025, some users experienced slow or incomplete searches in Slack.A backend configuration change caused an unexpected spike in queries to a search-related database service. We reversed the backend configuration, which resolved the impact to the search feature. While we managed any temporarily unindexed content, users were able to perform searches in Slack as expected, but some content may have been temporarily missing.We closely monitored internal health metrics for a period of time to ensure the issue was fully resolved by December 5, 2025 at around 1:10 PM PST.

Between 11:51 AM PST and 9:10 PM PST on December 2, 2025, some users experienced issues with the Slack search functionality. Affected users may have encountered a range of symptoms, including the display of incorrect search results, missing messages, noticeably degraded or slow performance, and in some cases, a complete failure to load any search content.We traced this back to a temporary, unexpected surge in resource demand that impacted a critical backend service responsible for processing search results. We increased resources for this service to mitigate impact and stabilize the search functionality, however, during this time, a backlog of unindexed content was created. This backlog prevented content from appearing in search results for some users.To resolve this, we began re-processing the accumulated backlog of unindexed content back into our search systems. Once the indexing process was complete, all messages and content shared during the initial impact window became fully searchable, resolving the issue for all users.

Between 2:08 PM PST and 2:34 PM PST on December 4, 2025, some users may have experienced 500 errors when trying to open a Canvas. Current status and recent actions taken: We have resolved the issue by reverting a web cache configuration setting that was causing the disruption. Users should no longer be experiencing trouble connecting to or loading Canvases in Slack.Scope: This issue did not affect any specific region, but a percentage of users may have been impacted globally.Previous impact to end users: Users experienced issues loading and accessing Canvases.Required resolution steps: NoneThis issue is now resolved for all users. We’re sorry for the disruption we brought to your day.

Starting around 1:45 AM PST until 4:30 AM PST on November 28, 2025, some users encountered connectivity issues, including difficulty accessing and loading their workspaces and receiving "Server error" messages.We traced this issue to a backend database service reaching unexpected capacity limits, which led to a spike in error rates and request timeouts. We immediately increased capacity limits for the affected databases, restoring full functionality and service stability to all impacted services.

Following a period of monitoring and with user validation now received, this issue has been resolved. We apologize for any inconvenience this issue may have caused. 

Between 10:10 AM PST and 10:25 AM PST on November 10, 2025, some users may have temporarily been unable to connect to Slack or experienced a degree of latency when attempting to use features such as huddles, workflows, or message delivery.We traced this back to a spike in traffic to core backend Slack functions. This traffic temporarily overwhelmed a subset of backend components, leading to brief increase in connection failures. The traffic spike subsided and connectivity was restored for all users by around 10:25 AM PST. To mitigate the risk of reoccurrence, we adjusted backend traffic routing rules to relieve affected systems and continued closely monitoring our health metrics. We determined the issue was fully resolved and necessary measures were in place by 12:30 PM PST.We continue to implement additional measures to reduce the likelihood of this recurring in the future.

Between 1:00 AM and 8:00 AM PST on November 12, 2025, some users experienced delays when attempting to use AI features, including message summaries and search.An upstream provider experienced latency with their services, resulting in backend errors for some Slack AI functions. To mitigate the issue, we temporarily routed traffic to a separate version. After the upstream provider resolved their issue, affected Slack AI functionality was successfully restored.