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Slack Outage History

Daily provider-status observations and published incident history for Slack.

Component incident

Slack has an active component incident; no global outage is indicated. Verified . Official provider source.

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Building verified history 12 of 24 verified daily observations collected. A percentage will appear after the minimum coverage threshold is met.

90-Day Trend

Jul 14Oct 12

Dashed calendar markers below identify legacy observations whose source-at-observation was not recorded.

Recorded Daily Status (Last 54 Days)

Jul 14 Today
Legacy observation Operational Degraded Partial Outage Major Outage Maintenance No Data

Incident History

June 2026
Trouble loading SSO configuration settings for some workspace admins
minor

View incident details and source

Notice published:

Login/SSO
update
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 If you continue to see outdated information, refresh the SSO Admin page to load the latest changes.
update
We have identified the trigger and developed a fix. We are currently deploying this fix and expect to resolve the issue shortly. We will provide another update once the deployment is complete.  We apologize for the inconvenience.
update
Some 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 value for the "Require SSO authentication for" field on the admin SSO settings page, which does not accurately reflect the actual backend configuration — SSO settings remain intact and in effect. We are actively investigating this issue and will provide an update as soon as we have more information to share. We apologize for the inconvenience.
Trouble performing some actions
minor

View incident details and source

Notice published:

Messaging
update
This issue is now resolved for all users. We apologize for any disruptions to your day.
update
Some 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 investigate the situation.
Trouble submitting workflow forms with file attachments on Android.
minor

View incident details and source

Notice published:

Workflows
update
This issue has been resolved. Android users who were experiencing issues submitting workflow forms containing a required file upload field can now do so successfully. A fix was delivered via a new update to the Slack Android app. Users who are still experiencing this issue should update the Slack app from the Google Play Store to resolve it. No other action is required.  We apologize for the inconvenience and thank you for your patience.
update
We continue to monitor the rollout of the new version of Slack for Android. We'll provide another update when we have further information to share. Thank you for your continued patience. 
update
The rollout of the new version of the Slack Android app is ongoing and may take up to several days to fully complete. We continue to monitor the rollout and will provide another update when we have more information to share. Thank you for your patience with us while we work through this. 
update
A fix for this issue has been delivered in a new version of the Slack Android app, and rollout has now begun. Android users will start seeing the updated app version become available in the Google Play Store as the rollout progresses. Once updated, users who were experiencing issues submitting workflow forms containing a required file upload field will be able to do so successfully.  We will continue to monitor the rollout and provide another update as additional information becomes available.
update
We have identified the cause of this issue and confirmed it affects a small subset of users on a single version of the Slack Android app. Users on other Android versions, iOS, and web are not affected. A fix is already available and will begin rolling out to Android users tomorrow. We will provide an update as soon as additional information becomes available.
update
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 completed. Users on Slack for iOS and Slack for web are not affected. We are actively investigating the issue and working to identify the root cause. We'll provide an update in 60 minutes or sooner if additional information becomes available.
Slack Messaging issue
minor

View incident details and source

Notice published:

Messaging
update
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.
Child windows displaying content at half height
minor

View incident details and source

Notice published:

update
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.
update
We’ve deployed a fix and are now performing validations. We'll provide an update in 30 minutes or sooner if additional information becomes available.
update
We'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 technical trigger and are deploying a fix. We'll provide an update in 30 minutes or sooner if additional information becomes available.
Trouble with Gmail add-on Integration
minor

View incident details and source

Notice published:

Apps/Integrations/APIs
update
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.
update
We’re continuing to investigate the issues with the Slack Gmail add-on and are actively working on a fix to resolve the issue. There’s no new information to share at this time, but we’ll provide an update as soon as we have more details on implementing the fix. We apologize for any inconvenience this issue is causing for users. 
update
We’re actively working on the fix to resolve the issue. We estimate this will take approximately four hours or more to complete, and validate the fix, before it can be deployed. As such, the next status update will be once the fix has been completed and validated, or we have new information to share. We apologize for any inconvenience this issue is causing for users. 
update
We continue to investigate the issue impacting Slack Gmail add-ons. We've identified the cause and our teams are working on a fix to resolve the issue as soon as possible. We’ll provide an update once additional information becomes available.
update
We’re still investigating the issue impacting Slack Gmail add-ons. No additional news to share just yet, but we’re focused on getting things back to normal as quickly as we can. We apologize for the continued trouble. We’ll provide an update in 60 minutes or sooner if additional information becomes available.
update
We’re still investigating the issue impacting Slack Gmail add-ons. No additional news to share just yet, but we’re focused on getting things back to normal as quickly as we can. We apologize for the continued trouble. We’ll provide an update in 60 minutes or sooner if additional information becomes available.
update
We’re still actively investigating the issue impacting the Slack Gmail add-on. We are working to identify the cause, and no workaround is currently available. We’ll provide an update in 30 minutes or sooner if additional information becomes available.
update
We'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 add-on developer” error message when attempting to use it. We are investigating the cause of this issue. We'll provide an update in 30 minutes or sooner if additional information becomes available.
Trouble adding multiple users to channels
minor

View incident details and source

Notice published:

Workspace/Org Administration
update
We've resolved an issue that could cause incorrect email address tokens to appear when users pasted multiple email addresses into the member invite flow. In some cases, pasted email addresses were incorrectly matched to existing members with similar email addresses, requiring users to manually correct the entries before proceeding. We identified the cause of the issue and deployed a fix to ensure email addresses are now matched correctly when pasted into the invite flow. The issue is resolved for all affected users. If you're still experiencing any trouble, please reload Slack using Command + Shift + R (Mac) or Ctrl + Shift + R (Windows/Linux). We apologize for the disruption and appreciate your patience.
update
We've deployed a fix for the issue and are monitoring to confirm that the issue has been resolved.  We'll provide another update as soon as more information becomes available.
update
We’ve identified the cause of the issue and we’re validating a fix to ensure it fully resolves the issue before we deploy it. We'll provide further update as soon as more information becomes available.
update
We’re working to reproduce the issue. This will help us ‌identify the underlying cause and provide a resolution. We'll provide further update as soon as more information becomes available.
update
We've received reports that a subset of users may continue to experience issues when attempting to add multiple users to channels using email addresses. These users may encounter a "Multiple matches" error, preventing the intended user from being identified and added to the channel. We’re actively investigating these reports to determine whether additional remediation is required. We'll provide further updates as more information becomes available.
update
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 trigger.  Required resolution steps: No further action is necessary. Thanks for sticking with us as we resolved this. We apologize for any disruptions to your day.
update
Our work on this issue is still ongoing. Current status and actions being taken: We have identified the trigger for this issue and a fix is in the process of deploying. The progress is being monitored and we’ll provide an update as soon as the fix is completely deployed and verified. We'll be back with another update once we have news to share.
update
Some 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. We're investigating and will let you know as soon as we know more.
Some users unable to sign in
minor

View incident details and source

Notice published:

Login/SSO
update
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 action to avoid a repeat in the future.
update
Some 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 minutes or sooner as we have more details to share.
Administrators may experience errors in member management.
minor

View incident details and source

Notice published:

Workspace/Org Administration
update
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 been unable to run macros on their workspaces. Workspace Admins should now be able to add new members via the Manage Members admin page. A page refresh may be required. We apologize for the disruption to your work.
update
We have identified the cause of the issue preventing some workspace admins from adding new members via the Admin page as a recent change and are in the process of rolling back this change.  Current impact to end users: Some users may encounter errors when attempting to add or manage members, send invites, or run macros on their workspace. Known workaround: Inviting members via the Slack client workspace menu (workspace name → Invite people to workspace) is currently working as expected. We'll provide an update within 30 minutes or sooner if additional information becomes available.
update
We're looking into an issue where some users may be unable to add new members, send invites, or run macros on their workspaces. We're on the case and will provide another update as soon as we have more details to share. We apologize for any disruption to your work. Current impact to end users: Some users may encounter errors when attempting to add or manage members, send invites, or run macros on their workspace. We'll provide an update within 30 minutes or sooner if additional information becomes available.
update
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 being taken.
Trouble connecting or loading Slack
minor

View incident details and source

Notice published:

Connectivity Messaging
update
This issue is now resolved for all users. Current status and recent actions taken: we've resolved the issue where some Slack users may have experienced message send failures and thread loading issues. We identified and addressed the root cause, and services have been fully restored. We apologize for any disruptions to your day.
update
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.
update
We'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 details on current actions being taken.

Legacy Incident Archive

40 archived records restored. These records predate source-at-observation attestation. They are shown as historical ServiceAlert records only and do not establish a provider-reported incident, resolution, duration, or current active state.

August 2026
Incident: Trouble Using Search Bar For Some Admins
minor Source not attested
Last archived state: resolved
View archived record details
resolved
We've completed the rollback of the recent change that was the trigger of the issue. The Search bar and Admin dashboard  is restored for all users.We apologize for the inconvenience caused to you and your business.
July 2026
Incident: Feature Degradation Affecting the Receipt of Emails in Slack
minor Source not attested
Last archived state: resolved
View archived record details
resolved
The fix has been successfully deployed, and validation is now complete. The issue preventing users from receiving incoming emails into Slack is fully resolved, and normal service functionality has been restored.We apologize for any disruptions to your day.
Incident: Issue sending messages to channels via certain Workflows
minor Source not attested
Last archived state: resolved
View archived record details
resolved
We’ve performed a test of reverting a recent change and this appears to have resolved the issue. We are in the process of performing a production wide revert of this change. This is expected to take some time to complete and we will validate that it is successful.We’ll provide an update in 2 hours or sooner if more information becomes available. 
Incident: Receiving reminders in Slack issue
minor Source not attested
Last archived state: resolved
View archived record details
resolved
After a period of monitoring, we can see that reminders are now working as expected following the fix deployment. This issue has been resolved as of 03:00 UTC, July 24. We apologize for any inconvenience this issue has caused you. 
June 2026
Incident: Chat functionality unavailable on Slack Help page
minor Source not attested
Last archived state: resolved
View archived record details
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.
Incident: Trouble submitting workflow forms with file attachments on Android.
minor Source not attested
Last archived state: resolved
View archived record details
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.
Incident: Trouble loading SSO configuration settings for some workspace admins
minor Source not attested
Last archived state: resolved
View archived record details
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.
Incident: Trouble performing some actions
minor Source not attested
Last archived state: resolved
View archived record details
resolved
This issue is now resolved for all users.We apologize for any disruptions to your day.
Incident: Slack Messaging issue
minor Source not attested
Last archived state: resolved
View archived record details
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.
Incident: Child windows displaying content at half height
minor Source not attested
Last archived state: resolved
View archived record details
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.