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About the API Announcements category
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0
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24667
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December 8, 2016
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Upcoming changes to revocation reasons
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1
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422
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September 21, 2022
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New "Service Busy" responses beginning during high load
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1
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623
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September 19, 2022
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Rejecting SHA-1 CSRs and validation using TLS 1.0 / 1.1 URLs
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1
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2009
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September 15, 2022
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Rejecting TLS 1.0 / 1.1 for inbound ACME connections
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2
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855
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September 15, 2022
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Minor change to validation networking
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2
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1035
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July 28, 2022
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Rate Limit Error Message Improvements
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0
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247
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June 29, 2022
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Changes to TLS-ALPN-01 challenge validation
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1
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6541
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January 26, 2022
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Change in Revocation Methods Due to a (now patched) ACME bug
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1
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1823
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December 13, 2021
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Staging partial database reset, 15 Nov 2021
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1
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892
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November 15, 2021
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Production Chain Changes
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3
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68219
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September 29, 2021
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End of Life Plan for ACMEv1
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27
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175482
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September 15, 2021
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Providing a longer certificate chain by default
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1
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6811
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May 4, 2021
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ECDSA availability in production environment
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0
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18590
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April 28, 2021
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OpenSSL Client Compatibility Changes for Let’s Encrypt Certificates
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0
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49440
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January 27, 2021
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ECDSA Issuance available in Staging: March 24
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0
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6013
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March 19, 2021
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Staging maintenance and database reset, 2 March 2021
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1
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1471
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March 2, 2021
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Staging Hierarchy Changes
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3
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2849
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February 26, 2021
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Stability and Purpose of Staging
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0
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1324
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February 23, 2021
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ACME v2: Removing /acme/issuer-cert endpoint
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0
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1842
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December 12, 2020
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Beginning Issuance from R3
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2
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18551
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December 2, 2020
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ACME v2 - Scheduled deprecation of unauthenticated resource GETs
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4
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27017
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September 24, 2020
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Transitioning to ISRG's Root
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0
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8604
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May 21, 2019
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Transition to ISRG's Root delayed until Jan 11 2021
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2
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56290
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September 17, 2020
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Issuing for common RSA key sizes only
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0
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1993
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September 16, 2020
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ACME v1/v2: Validating challenges from multiple network vantage points
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5
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41988
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June 23, 2020
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ACME v1/v2 - Changing "Challenges" returned for invalid/valid authorizations
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2
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2674
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January 14, 2020
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New CDN for the Production API
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0
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5562
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September 23, 2019
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New CDN for the Staging API
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0
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2065
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September 12, 2019
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RFC 8555 Subproblems
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1
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2286
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July 23, 2019
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