# Doppler: Major incident: CLI Tokens Authentication Issues

**Summary:** Doppler reported a major API (api.doppler.com) incident: CLI token authentication failed with "Invalid CLI Token" errors. It started at 2021-04-14 04:38 UTC and was resolved at 2021-04-14 05:44 UTC, lasting 1 h 5 min. Affected users could work around it by re-logging in with 'doppler login'; Doppler confirmed tokens were functioning again. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2021-04-14 04:38 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/2ngrc034h317](https://stspg.io/2ngrc034h317)
- [Company: Doppler](https://rewindex.com/company/doppler.md)
- Versions: before (none: first archived) → after incident\_version:308/gvbbzcglqh42@178796ab8d5e
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ CLI Tokens Authentication Issues
```

**2. Added: Impact**

```diff
+ major
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2021-04-14 04:38 UTC
```

**5. Added: Resolved time**

```diff
+ 2021-04-14 05:44 UTC
```

**6. Added: Affected components**

```diff
+ API (api.doppler.com)
```

**7. Added: Update** (identified) · 2021-04-14 04:38 UTC

```diff
+ We are currently experiencing an issue with authenticating CLI tokens. When connecting with a CLI token, users are receiving the message "Invalid CLI Token". We are investigating this and will have a new update within 1 hour. If you are experiencing this issue, you can circumvent it by re-logging in to the Doppler CLI using 'doppler login'.
```

**8. Added: Update** (resolved) · 2021-04-14 05:44 UTC

```diff
+ The issue causing CLI authentication to fail has been resolved. CLI tokens should now be functioning as expected. If your CLI token continues not to work, please reach out to support.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2021-04-14 04:38 UTC | Major incident: CLI Tokens Authentication Issues (this change) | outage |

All Doppler changes: [timeline](https://rewindex.com/company/doppler/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/iaca899bf3b21c5 · Markdown: https://rewindex.com/change/iaca899bf3b21c5.md · JSON: https://rewindex.com/api/v1/changes/iaca899bf3b21c5 · Generated 2026-10-18T02:54:54.336Z