Slack Outage History

86 incidents recorded over the last 365 days, 45 of them resolved, 41 still open. Durations are measured from when PulsAPI first saw the problem to when it cleared, which is usually longer than the vendor's own figure.

Live Slack status78.95% uptime history

Every Recorded Slack Incident

Slack incidents, newest first, with date, duration and status.
DateIncidentDurationStatus
Aug 13, 2026Trouble Accessing Historical Messages With Custom Data Retention Policies EnabledUsers with custom data retention policies enabled might be unable to see or load older messages. We apologize for the trouble and we'll share more news as it becomes available.—Investigating
Aug 6, 2026Trouble Using Search Bar For Some AdminsSince approximately 21:00 UTC on August 6, some admins have been unable to click or use the search bar on org dashboard pages. We are aware of this issue and are actively investigating the cause. We'll provide an update…—Investigating
Jul 28, 2026Feature Degradation Affecting the Receipt of Emails in SlackWe're currently investigating an issue affecting users' ability to receive incoming emails into Slack, caused by some issues with our email ingestion pipeline. We're sorry for any inconvenience this is causing, our team…—Investigating
Jul 24, 2026Issue sending messages to channels via certain WorkflowsWe’re aware of an issue affecting Workflows that include 'refer to a message link'. Users with these workflows are unable to send a message to a channel, and will receive an ‘Input Validation Error’ when trying to…—Investigating
Jul 24, 2026Receiving reminders in Slack issueSome users are reporting issues with receiving reminders in Slack. We're aware of the issue and are actively investigating. We'll provide an update as soon as more information becomes available. We apologize for any…—Investigating
Jun 26, 2026Chat functionality unavailable on Slack Help page We're aware of an issue affecting users ability to reach our Slack Support team via the Chat functionality on the Slack Help page. Users will be unable to click on the ‘Chat’ option and will see a ‘Chat is temporarily…—Investigating
Jun 17, 2026Trouble loading SSO configuration settings for some workspace adminsSome workspace admins on standalone (non-Enterprise Grid) workspaces may be experiencing an issue where the SSO and authentication configuration page does not display current settings as expected. Admins may see a blank…—Investigating
Jun 17, 2026Trouble performing some actionsSome users may be experiencing issues performing certain actions in Slack, channel creation, invitation, and join operations may result in a degraded experience. Thank you for your patience while we continue to…—Investigating
Jun 16, 2026Trouble submitting workflow forms with file attachments on Android.We are aware that some users on the Slack Android app are unable to submit workflow forms that contain a required file upload field. After a file is selected, the Submit button becomes disabled and the form cannot be…—Investigating
Jun 16, 2026Slack Messaging issueSome 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.—Investigating
Jun 11, 2026Child windows displaying content at half heightWe're aware of an issue affecting the Slack desktop app. Users may find that content in child windows, such as channels or documents opened in a separate window, displays at reduced height. We’ve identified the…—Investigating
Jun 10, 2026Trouble with Gmail add-on IntegrationWe're aware of an issue impacting the Slack Gmail add-on integration. As a result, users are unable to interact with the add-on and may encounter a “Something went wrong when executing the add-on. For help, contact the…—Investigating
Jun 9, 2026Trouble adding multiple users to channelsSome users may experience issues when attempting to add multiple users to channels. Multiple matches error may appear along with a failure to identify team members. This may cause subsequent workflows not to trigger…—Investigating
Jun 8, 2026Some users unable to sign inSome users in EMEA may be failing to receive 2FA codes via SMS when logging into Slack. We are investigating the trigger and working to resolve this incident as quickly as possible.We will provide another update in 30…—Investigating
Jun 3, 2026Administrators may experience errors in member management.We're investigating a new incident.Current impact to end users: Some administrators may be experiencing errors managing members.We'll provide an update within 30 minutes including further details on current actions…—Investigating
Jun 3, 2026Trouble connecting or loading SlackWe're investigating a new incident.Current impact to end users: Some users may be experiencing trouble loading or connecting to Slack. We're on the case.We'll provide an update within 30 minutes including further…—Investigating
Jun 2, 2026Connectivity Issues Affecting Some Users in EuropeCurrent 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…—Investigating
Jun 1, 2026Partial Degradation Impacting UsergroupsWe are currently investigating a partial degradation impacting usergroups. We’ll provide an update as soon as we have more information to share and are sorry for any inconvenience this issue is causing.—Investigating
May 27, 2026Severe Latency Impacting All Slack Services 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.1629h 2mResolved
May 27, 2026Trouble with Slack - General Slack functionality issuesWe're investigating a new incident.Current impact to end users: We’re aware of an issue affecting workflows, message edits, channel renames, apps, and channel creations.We'll provide an update within 30 minutes…—Investigating
May 19, 2026Trouble uploading files and emojis in SlackWe've identified the trigger, causing slow file and emoji uploads in Slack, and have deployed a fix. At this time, we are monitoring the environment to confirm full resolution.Current status and actions being taken…—Investigating
May 18, 2026Huddle AI summaries not being generatedSome 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…—Investigating
May 14, 2026Issues affecting file uploads, message edits, channel renames, and channel creationsWe're investigating a new incident.Current impact to end users: We’re aware of an issue affecting file uploads, message edits, channel renames, and channel creations.We'll provide an update within 30 minutes including…—Investigating
May 8, 2026EKM customers were previously experiencing issues with channel loading and message deliveryBetween approximately 10:55 AM and 11:10 AM PDT, customers using Enterprise Key Management (EKM) may have experienced issues sending messages and loading some channels. Error rates have returned to normal levels and…—Investigating
May 8, 2026Scheduled Grid Migrations are experiencing extended downtimeUsers who are undergoing scheduled Grid Migrations are experiencing extended downtime. Downtime is expected during a Grid Migration however it's taking longer than usual. During the downtime users are unable to access…—Investigating
May 4, 2026Slow behaviour in SlackSome users are experiencing issues with workflows. Triggered workflows may fail to complete, with the first step not executing. We'll provide another update as soon as possible.—Investigating
May 1, 2026Slack Search Feature Disruption - Japan regionAt 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…—Investigating
Apr 27, 2026Users May Not Receive Notifications on Slack Thread RepliesSome users have reported issues with thread replies not generating a notification banner. We’re investigating the issue, and have identified a recent deployment as a possible trigger.We apologize for the inconvenience…—Investigating
Apr 23, 2026Slack Threads Not LoadingSome users are having trouble loading Threads in Slack, this is affecting Windows and Chrome users. Users may receive an error asking them to ‘Try Again’. We apologize for the inconvenience and will report back as more…—Investigating
Apr 21, 2026Custom status not expiringWe're aware of an issue affecting Slack. Some users who have set a custom status to expire at a specific time are finding that their status is not automatically clearing as expected. We're actively investigating and…—Investigating
Apr 20, 2026Users may experience delays due to increased load on bychan keyspace affecting system performanceThis 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…—Investigating
Apr 10, 2026Trouble Sending MessagesWe're investigating a new incident.Current impact to end users: Some users may experience trouble sending messages. We're investigating the issue and we regret any inconvenience this is causing. We'll provide an update…—Investigating
Apr 9, 2026Trouble with Slackbot and AI-powered featuresWe're investigating a new incident.Current impact to end users: Some users may be experiencing trouble with Slackbot responses. Other Slack functionality that leverages AI services may also be experiencing issues. We're…—Investigating
Apr 1, 2026Slackbot button in the top navigation is disappearingWe’re aware of an issue introduced in build 121247 that affects the Slackbot button in the top navigation bar. As a result, the button may no longer be visible to users. We've identified a fix and are performing a…—Investigating
Mar 29, 2026Issue with Sending and Receiving MessagesWe're investigating a new incident.Current impact to end users: Some users may experience elevated error rates and message-related degradations when sending and receiving messages across the Slack platformTeams are…—Investigating
Mar 28, 2026Issues while sending messages and loading message history is impacting some usersWe're investigating a new incident.Current impact to end users: Some users may experience issues while sending messages and loading message history in Slack. We'll provide an update within 30 minutes including further…—Investigating
Mar 26, 2026Trouble connecting to SlackWe are aware of an issue impacting Slack. As a result, some customers may be unable to load certain features, including activity and notification badge counts, and may encounter errors when using the service. We are…—Investigating
Mar 23, 2026Authorization Failure Errors Connecting to the Slack MCP SeverWe are aware that customers are receiving authorization failure errors when trying to connect to the Slack MCP server. We are currently investigating the issue and will provide an update as soon as more information…—Investigating
Mar 9, 2026Intermittent SSO login errors accessing Slack workspace.Some users may experience trouble logging into Slack. We’re on the case and will provide another update once we have more details to share. We’re sorry for the disruption.—Investigating
Mar 5, 2026Issues with App Mentions, Grid Migrations, and NotificationsWe're aware of an issue impacting the completion of ongoing enterprise migrations, resulting in longer than expected downtime. In efforts to resolve the issue we're increasing processing capacity and have deployed code…—Investigating
Mar 2, 2026Degraded Search Performance for Dubai IDR Users – Middle East (Dubai) RegionWe’ve noted that International Data Residency (IDR) users in the Middle East (Dubai) region may experience degraded search performance or search failures. Services for other users in the region are operating normally…—Investigating
Mar 1, 2026Issue with Slack Search featureWe are currently experiencing an issue with the Slack Search feature. Users may encounter errors or delays when attempting to use Search.We’re actively investigating, and will update as soon as we know more.—Investigating
Feb 25, 2026Slack Email Delivery Feature DegradationWe're aware of an issue where some users are unable to receive email confirmation codes and invites from Slack. As a result, these users cannot complete email login processes or accept invitations. We are currently…4319h 1mResolved
Feb 24, 2026Issue with Slack Direct MessagingWe're aware of an issue impacting direct message functionality. Users are unable to add people to multi-person direct messages, and some users are experiencing errors when attempting to send messages. We're…4319h 0mResolved
Feb 18, 2026Issues generating Incoming WebhooksIncoming Webhooks may silently fail to generate when installing Apps which offer this feature. We're investigating and will keep you updated as we make progress.4320h 26mResolved
Feb 18, 2026Users unable to access Slack using various browsersWe're aware of an issue where users using specific antivirus software can't access Slack while using a Chrome browser. As a result, users may encounter connection errors preventing them from logging in or accessing…4319h 22mResolved
Feb 12, 2026Trouble Accessing SlackWe're investigating a new incident.Current impact to end users: We are aware of an issue currently impacting a subset of Slack workspaces. We are actively investigating this issue.We'll provide an update within 30…4319h 16mResolved
Feb 11, 2026Unable to Install Apps to WorkspacesWe are currently investigating an issue affecting users' ability to install third-party apps to Slack workspaces. When attempting to authorize apps, users may encounter a blank screen that prevents the installation from…4319h 21mResolved
Feb 6, 2026Issue with scheduled workflowsWe're aware of an issue affecting scheduled workflows that include a Send a message step. Users may experience authentication errors preventing these workflows from executing as expected. Other workflow types, such as…4319h 9mResolved
Feb 5, 2026App History and Chat Tab Not LoadingWe are investigating an issue where the App History and Chat tabs are not loading for users. Users may see a blank screen when attempting to access these tabs. This issue affects desktop and web versions of Slack. We…4319h 3mResolved
Feb 3, 2026Windows desktop notification issuesWe've identified an issue affecting Windows desktop notifications for some Slack users. After updating to the latest release, users may still hear notification sounds, but the notification pop-ups aren't appearing on…4349h 26mResolved
Feb 2, 2026Users unable to create or edit workflowsUsers may be encountering an issue when editing an existing workflow. Creating a workflow remains unaffected. We're investigating this issue and are working to understand the situation further. We'll let you know as…4376h 59mResolved
Feb 1, 2026Users on Free, Trial, or Pro plans may see the workspaces appearing blurred outWe’re investigating a Feature Degradation affecting a number of users. Some users on Free, Trial, or Pro plans may see the workspaces appearing blurred out. We’ll provide updates as soon as possible, as more information…4411h 30mResolved
Jan 30, 2026Events errors related to Salesforce Automation applicationWe're investigating a new incident.Current impact to end users: Users may experience failures in events receiving the error "dispatch-unknown-error"We'll provide an update within 30 minutes, including further details on…4437h 50mResolved
Jan 30, 2026Trouble connecting to Salesforce ChannelsWe're aware of an issue where users may notice Salesforce channels renamed with a "ZC:" or alternative prefix and can't see channel discussions. Additionally, canvases on these channels may only appear in the Files…4444h 13mResolved
Jan 23, 2026Issue loading activity feed in SlackWe’re investigating a Feature Degradation affecting a number of users. Some users may be unable to load their activity feed and may encounter the following error message: “Something’s fishy! Slack can’t seem to load…4623h 2mResolved
Jan 22, 2026Upstream provider issue causing email delivery delaysAn upstream provider is experiencing issues that are causing delays in some email delivery. We’ll be back with an update once things are resolved on their end.4630h 4mResolved
Jan 22, 2026Trouble loading Slack and performing actionsSome users are having trouble performing certain actions related to App Management, such as; Create New App from https://api.slack.com/appsShow button to reveal the client secret Unable to install or delete internal…4632h 21mResolved
Jan 15, 2026Trouble loading Slack, messages, or canvasThis 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…4800h 23mResolved
Jan 14, 2026Trouble with adding payment methodsWe're investigating a new incident.Current impact to end users: We’re aware of an issue impacting some users’ ability to add payment methods. Our teams are investigating, and we’ll provide an update in 30 minutes or…4822h 40mResolved
Jan 8, 2026Trouble with Slack - General Slack functionality issuesWe are currently investigating an issue where a subset of users may experience difficulties accessing Slack features. Some users may experience failed message sends, loading errors, or other intermittent failures across…4965h 30mResolved
Dec 24, 2025Issue loading threads in SlackWe are aware of an issue currently impacting threads. Our teams are investigating, and we will provide more information as soon as it’s available. We regret any inconvenience this is causing.5347h 31mResolved
Dec 15, 2025Trouble running workflowsUsers may experience issues when attempting to trigger a workflow using the Jira Cloud connector. We're investigating and will let you know as soon as we have more information.5546h 51mResolved
Dec 8, 2025Issues loading or viewing threadsWe are aware of an issue currently impacting threads. Our teams are investigating, and we will provide more information as soon as it’s available. We’re very sorry for any inconvenience this is causing.5708h 41mResolved
Dec 5, 2025Slow or incomplete Slack searchesUsers may be experiencing delays with certain actions in Slack, and Slack may be responding slowly. We're actively looking in to this, and we'll share another update as soon as we have more information. We…5799h 40mResolved
Dec 4, 2025Slack Canvas OutageBetween 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…5804h 21mResolved
Dec 2, 2025Trouble with SearchWe're investigating a new incident.Current impact to end users: We are currently investigating reports of search functionality issues in Slack. Users may experience increased latency or errors when attempting to…5855h 56mResolved
Nov 28, 2025Slack login, workspaces loading failures, and general Slack functionality issuesWe are currently investigating an issue where a subset of users may be unable to log into Slack or use certain features. We apologise for the inconvenience and will provide another update as soon as we have more details…5961h 20mResolved
Nov 20, 2025Some users unable to sign inSome users may experience trouble logging into Slack. We’re on the case and will provide another update once we have more details to share. We’re sorry for the disruption.6140h 35mResolved
Nov 12, 2025Slowness in AI Search Answers and AI ExplainCustomers using AI search are experiencing delays. AI generated summaries are slow in returning results. Other search functionality in Slack is working as expected. We are actively investigating the cause of the…6340h 46mResolved
Nov 10, 2025Trouble connecting to or loading SlackWe're investigating a new incident.Current impact to end users: Some users may have trouble connecting to or loading Slack.We'll provide an update within 30 minutes including further details on current actions being…6385h 38mResolved
Nov 8, 2025Some users unable to sign inWe're investigating an issue where some users are seeing a blank page when attempting to log in to Slack.If you encounter a blank page, please go to slack.com in your browser and select your workspace. The login page…6429h 39mResolved
Nov 7, 2025Trouble connecting to or loading SlackWe're investigating a new incident.Current impact to end users: Some users may experience issues connecting to or loading Slack.We'll provide an update within 30 minutes including further details on current actions…6475h 11mResolved
Nov 6, 2025Slack Connectivity issueWe are investigating an issue where customers are reporting being unable to connect to Slack services or are receiving errors if they are already connected. We are actively pursuing a number of activities to restore…6498h 38mResolved
Nov 5, 2025Workflow Builder Data SourcesAt approximately 3:15 AM PST, we became aware of an issue with External Trigger Schedule Logic runs that are not working as expected. New Data Sources will be unavailable in the Workflow Builder until the first schema…6511h 2mResolved
Nov 3, 2025Search FailuresWe’re investigating an issue impacting Search. Some users may experience significant delays, or the search bar may become unresponsive/stuck loading when searching for recent messages or files. We have identified the…6554h 33mResolved
Nov 1, 2025Issue with Files endpoint, SlackAI, Search, Messaging, and SlackConnect functionality At approximately 1:00 AM PDT on November 1, 2025, some users may have experienced issues with the Files endpoint, SlackAI, Search, Messaging, and Slack Connect functionality. The issue was caused by a database job that…6609h 17mResolved
Nov 1, 2025File upload errorsAt around 1:00 AM PDT on November 1, 2025, we observed an error related to file upload. Users experienced issues while uploading files. This problem was caused by an ongoing incident triggered by a migration job running…6609h 52mResolved
Oct 29, 2025Trouble with searchWe’re investigating an issue where some users are having trouble searching in Slack. We’ll be back with another update once we know more.6674h 33mResolved
Oct 22, 2025Intermittent trouble with file previews and sending messages for EKM usersWe're investigating a new incident.Current impact to end users: Users may see inconsistent errors when attempting to send messages in Slack, and some file previews/thumbnails may have trouble loading.We'll provide an…6845h 2mResolved
Oct 22, 2025Search FailuresWe've noticed that the Slack Search functionality issue has resurfaced, and we're investigating. A subset of users is seeing Search indexing failures for messages, files, reactions, stars, and pins. This issue affects…6848h 53mResolved
Oct 22, 2025Search Failures We’re investigating an issue impacting Search. Some users may experience issues while searching for recent messages or files. We have identified the issue and are actively working on a fix. We’ll share another update in…6855h 2mResolved
Oct 20, 2025Trouble with huddlesWe're currently investigating an issue where some users remain stuck in a huddle after attempting to leave. This is related to an ongoing issue with an upstream provider. We'll share an update as soon as we have more…6893h 8mResolved
Oct 20, 2025Trouble loading Slack, using canvas, huddles, and other features.Users may be experiencing intermittent difficulties with Slack, such as loading threads and canvases, sending messages, and using huddles.We're investigating this and we will be back with an update as soon as possible.6899h 49mResolved
Oct 15, 2025Potential Errors Loading Messages/ThreadsUsers may experience errors when loading messages or threads. We’re on the case and will provide another update in 30 minutes or sooner if we have more details to share. Thank you for your patience in the meantime.7010h 35mResolved
Oct 15, 2025Search FailuresWe’re investigating an issue impacting search. Some searches may not complete or may return partial results. Org and workspace dashboards may also not load correctly at this time. We’re on the case and will provide…7011h 42mResolved

How to Read This Slack Incident Log

Each row is an incident PulsAPI observed, not a summary written afterwards. The duration is wall-clock time between the first failing check and the first clean one, so it includes the window before Slack acknowledged anything. Vendor post-mortems typically measure from acknowledgement, which is why their numbers are usually shorter.

Incidents still open have no duration yet and are listed as ongoing rather than being given a running total. The archive covers the last 365 days; anything older has aged out of the window rather than never having happened.

The longest single Slack outage in this window ran 292d 3h, against a mean recovery of 228d 1h. If you depend on Slack in a customer-facing path, the longest figure is the one to design around. The mean is what happens on a normal bad day; the maximum is what happens on the worst one.