# 1Password: Major incident: SSO sign-in failing on some attempts for some users

**Summary:** 1Password reported major SSO degradation affecting Canada, Enterprise, Europe and USA/Global, with some users needing to retry IdP authentication because of an upstream provider. It started on 2026-04-13 17:24 UTC and was resolved on 2026-04-22 15:17 UTC, lasting 8 days 21 h. _(machine-written, sol)_
- Kind: Major incident · Label: degradation (model (Jev))
- Changed: 2026-04-13 17:24 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/4d2lgv6ywgyq](https://stspg.io/4d2lgv6ywgyq)
- [Company: 1Password](https://rewindex.com/company/1password.md)
- Versions: before (none: first archived) → after incident\_version:302/tdd7fy641q7k@04e12e26774b
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ SSO sign-in failing on some attempts for some users
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-04-13 17:24 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-04-22 15:17 UTC
```

**6. Added: Affected components**

```diff
+ Canada - SSO (Single Sign On), Enterprise - SSO (Single Sign On), Europe - SSO (Single Sign On), SSO (Single Sign On), USA/Global - SSO (Single Sign On)
```

**7. Added: Update** (monitoring) · 2026-04-13 17:24 UTC

```diff
+ SSO is experiencing degraded functionality because of an upstream provider. We are monitoring, and users may need to retry when authenticating with their IdP.
```

**8. Added: Update** (monitoring) · 2026-04-15 15:49 UTC

```diff
+ We are continuing to monitor for any further issues.
```

**9. Added: Update** (monitoring) · 2026-04-17 15:07 UTC

```diff
+ We are continuing to monitor for any further issues.
```

**10. Added: Update** (resolved) · 2026-04-22 15:17 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-04-13 17:24 UTC | Major incident: SSO sign-in failing on some attempts for some users (this change) | degradation |

All 1Password changes: [timeline](https://rewindex.com/company/1password/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/idbf9cf06dd67fb · Markdown: https://rewindex.com/change/idbf9cf06dd67fb.md · JSON: https://rewindex.com/api/v1/changes/idbf9cf06dd67fb · Generated 2026-10-18T03:21:26.687Z