# Auth0 deprecations & changes

4 item(s): 4 upcoming, 0 without an announced date, 0 past. Data via [Dead Canary](https://deadcanary.io/vendor/auth0/). Company profile: [Auth0](https://rewindex.com/company/auth0.md)

- Breaking change: 2
- Shutdown: 1
- Deprecation: 1

## Upcoming

| Effective | Type | Change | Details | Source | Via |
| --- | --- | --- | --- | --- | --- |
| 2026-10-23 | Breaking change | Third-party application creation default security mode | From 2026-10-23, new third-party apps created via POST /api/v2/clients without a security mode get strict enhanced security automatically. | [source](https://auth0.com/docs/troubleshoot/product-lifecycle/deprecations-and-migrations#enhanced-security-for-third-party-applications) | [Dead Canary](https://deadcanary.io/event/auth0-third-party-application-creation-default-security-mode-20f3/) |
| 2026-11-18 | Shutdown | Rules and Hooks | Rules and Hooks stop executing and are removed after 2026-11-18; migrate to Actions. | [source](https://auth0.com/docs/troubleshoot/product-lifecycle/deprecations-and-migrations#rules-and-hooks-deprecations) | [Dead Canary](https://deadcanary.io/event/auth0-rules-and-hooks-e00f/) |
| 2027-01-20 | Breaking change | Legacy Custom DB User Import behavior | Custom database user imports will fully import users immediately on password reset or blocked first login instead of partial imports, from 2027-01-20. | [source](https://auth0.com/docs/troubleshoot/product-lifecycle/deprecations-and-migrations#legacy-custom-db-user-import) | [Dead Canary](https://deadcanary.io/event/auth0-legacy-custom-db-user-import-behavior-4a37/) |
| 2027-03-04 | Deprecation | Uncapped user profile data (10KB limit) | User profiles above a 10KB limit are deprecated as of 2027-03-04; oversized profiles within the extended allowance still succeed with warnings. | [source](https://auth0.com/docs/troubleshoot/product-lifecycle/deprecations-and-migrations#uncapped-user-profile-data) | [Dead Canary](https://deadcanary.io/event/auth0-uncapped-user-profile-data-10kb-limit-9f40/) |


---
Canonical: https://rewindex.com/company/auth0/deprecations · Markdown: https://rewindex.com/company/auth0/deprecations.md · JSON: https://rewindex.com/api/v1/companies/auth0/deprecations · Generated 2026-10-18T08:29:14.372Z