# Slack: Some users unable to sign in

> Slack status incident “Some users unable to sign in” on 2026-06-08: impact minor (vendor’s label), 36 min, 2 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/slack/incidents/1562
Last updated: 2026-06-08T19:35:49Z

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-06-08 19:00 UTC · Resolved: 2026-06-08 19:35 UTC · Duration: 36 min
- Updates: 2 · Affected components: Login/SSO
- [Vendor status page: https://slack-status.com/2026-06/d13366ccb07b34a5](https://slack-status.com/2026-06/d13366ccb07b34a5)
- [Company: Slack](https://rewindex.com/company/slack.md)

## Timeline of updates

- **update** 2026-06-08 19:00 UTC: 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.
- **resolved** 2026-06-08 19:35 UTC: 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.

## Cite this

Status incident (vendor impact label: minor) posted by Slack, started 2026-06-08 19:00 UTC, resolved after 36 min, 2 update(s).

- Canonical URL: https://rewindex.com/company/slack/incidents/1562
- Citation: Slack, “Some users unable to sign in” (2026-06-08 19:00 UTC). Archived by Rewindex: https://rewindex.com/company/slack/incidents/1562 (CC BY 4.0).
- Markdown link: `[Slack: Some users unable to sign in (2026-06-08)](https://rewindex.com/company/slack/incidents/1562)`


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Canonical: https://rewindex.com/company/slack/incidents/1562 · Markdown: https://rewindex.com/company/slack/incidents/1562.md · JSON: https://rewindex.com/api/v1/companies/slack/incidents/1562 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-04T16:34:40.907Z