# CA Owners MUST ensure that all TLS server authentication precertificates issued by such CAs are logged to at least one (1) CT log recognized by Chrome as Usable or Qualified before issuing the corresponding certificate. — TLS certificate and CA requirement effective dates (CA/Browser Forum, Chrome, Mozilla)

For CA Owners MUST ensure that all TLS server authentication precertificates issued by such CAs are logged to at least one (1) CT log recognized by Chrome as Usable or Qualified before issuing the corresponding certificate., requirement is CA Owners MUST ensure that all TLS server authentication precertificates issued by such CAs are logged to at least one (1) CT log recognized by Chrome as Usable or Qualified before issuing the corresponding certificate; effective date is 2026-06-15; authority is Google Chrome Root Program; scope is CAs included in the Chrome Root Store, recorded from its source on 2026-08-05.

- **Requirement:** CA Owners MUST ensure that all TLS server authentication precertificates issued by such CAs are logged to at least one (1) CT log recognized by Chrome as Usable or Qualified before issuing the corresponding certificate.
- **Effective date:** 2026-06-15
- **Authority:** Google Chrome Root Program _(our reading, not quoted from the source)_
- **Scope:** CAs included in the Chrome Root Store _(our reading, not quoted from the source)_

## What the source says

> Effective June 15, 2026 , CA Owners with CA certificates that validate to a certificate included in the Chrome Root Store MUST ensure that all TLS server authentication precertificates issued by such CAs are logged to at least one (1) CT log recognized by Chrome as

## Source

- https://googlechrome.github.io/chromerootprogram/

Last verified: 2026-08-05. Review by: 2026-11-03.
Part of [TLS certificate and CA requirement effective dates (CA/Browser Forum, Chrome, Mozilla)](https://referencesource.org/tls-certificate-requirement-effective-dates/).