# Buffer: Major incident: Some customers unable to log in

**Summary:** Some Buffer customers could not log in because email verification codes failed to arrive or were rejected. The vendor-rated major outage started at 2026-08-26 23:29 UTC and was resolved at 2026-08-27 03:48 UTC, lasting 4 h 18 min. Buffer applied a fix restoring verification email delivery and working codes. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2026-08-26 23:29 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://status.buffer.com/incidents/01M106GQP4E3SRVDF55E1RB9EN](https://status.buffer.com/incidents/01M106GQP4E3SRVDF55E1RB9EN)
- [Company: Buffer](https://rewindex.com/company/buffer.md)
- Versions: before (none: first archived) → after incident\_version:238/01M106GQP4E3SRVDF55E1RB9EN@2525d7663465
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Some customers unable to log in
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2026-08-26 23:29 UTC
```

**5. Added: Resolved time**

```diff
+ 2026-08-27 03:48 UTC
```

**6. Added: Update** (investigating) · 2026-08-26 23:29 UTC

```diff
+ We're aware of an issue affecting login for some customers. Verification codes sent by email may not arrive, or may not be accepted when entered. If you're waiting on a code, request one and wait rather than requesting several, as only the most recent code will work. It's also worth checking your spam folder.
```

**7. Added: Update** (monitoring) · 2026-08-27 02:10 UTC

```diff
+ We’ve identified the issue affecting email-based login and applied a fix. Verification emails should now arrive with working codes. If you were previously unable to log in, please try again. We’ll continue monitoring the fix. If you’re still experiencing issues, contact us at hello@buffer.com: mailto:hello@buffer.com.
```

**8. Added: Update** (resolved) · 2026-08-27 03:48 UTC

```diff
+ The issue affecting login verification emails and codes has been fully resolved. We’re sorry for the trouble and appreciate your patience while we worked through it. If you're still experiencing issues, please reach out to us at hello@buffer.com.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2026-08-26 23:29 UTC | Major incident: Some customers unable to log in (this change) | outage |

All Buffer changes: [timeline](https://rewindex.com/company/buffer/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._


---
Canonical: https://rewindex.com/change/id43f210e971b18 · Markdown: https://rewindex.com/change/id43f210e971b18.md · JSON: https://rewindex.com/api/v1/changes/id43f210e971b18 · Generated 2026-10-18T01:30:17.627Z