# WorkOS: Major incident: Elevated Authkit SSO Errors

**Summary:** WorkOS reported a major AuthKit SSO incident causing elevated errors and sign-on redirect loops for a small subset of customers; standalone SSO was unaffected. It started at 2026-07-31 16:12 UTC and resolved at 2026-07-31 18:06 UTC, lasting 1 h 53 min. A fix was deployed at 17:10 UTC. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-07-31 16:12 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/8yzkp8k0c921](https://stspg.io/8yzkp8k0c921)
- [Company: WorkOS](https://rewindex.com/company/workos.md)
- Versions: before (none: first archived) → after incident\_version:324/y8tkyl8p6s4y@dccdfc45877e
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Elevated Authkit SSO Errors
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-07-31 16:12 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-07-31 18:06 UTC
```

**6. Added: Affected components**

```diff
+ AuthKit, Core Services - AuthKit, Core Services - SSO, SSO
```

**7. Added: Update** (investigating) · 2026-07-31 16:01 UTC

```diff
+ We're investigating an increase in Single Sign-On errors. We will share an update as soon as possible.
```

**8. Added: Update** (investigating) · 2026-07-31 16:12 UTC

```diff
+ It appears some users may be experiencing a redirect loop during sign-on, we are narrowing in on a cause
```

**9. Added: Update** (investigating) · 2026-07-31 16:16 UTC

```diff
+ We have identifed an issue causing a small subset of Authkit SSO customers to experience errors during sign-on. A fix is being prepared.
```

**10. Added: Update** (investigating) · 2026-07-31 16:34 UTC

```diff
+ The issue affects a small set of customers using Authkit SSO. The standalone SSO API remains unaffected, we have corrected that here on the status page
```

**11. Added: Update** (investigating) · 2026-07-31 17:00 UTC

```diff
+ We have identified the issue and are deploying a fix. AuthKit SSO sign-on remains partially degraded for a small subset of customers; standalone SSO continues to be unaffected. We'll share another update once the fix has fully rolled out.
```

**12. Added: Update** (monitoring) · 2026-07-31 17:10 UTC

```diff
+ The fix has deployed, we are monitoring systems to verify the impact is fully mitigated
```

**13. Added: Update** (resolved) · 2026-07-31 18:06 UTC

```diff
+ The issue has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-07-31 16:12 UTC | Major incident: Elevated Authkit SSO Errors (this change) | outage |

All WorkOS changes: [timeline](https://rewindex.com/company/workos/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/iea6bea5a9a30d2 · Markdown: https://rewindex.com/change/iea6bea5a9a30d2.md · JSON: https://rewindex.com/api/v1/changes/iea6bea5a9a30d2 · Generated 2026-10-18T02:29:44.744Z