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About the API Announcements category
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0
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21637
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December 8, 2016
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Changes to TLS-ALPN-01 challenge validation
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1
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3522
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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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1205
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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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528
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November 15, 2021
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Production Chain Changes
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3
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53304
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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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166021
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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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5111
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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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11783
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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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40038
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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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3878
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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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1170
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March 2, 2021
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Staging Hierarchy Changes
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3
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2369
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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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910
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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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1580
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December 12, 2020
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Beginning Issuance from R3
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2
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17439
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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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25470
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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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7623
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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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45335
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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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1530
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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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39573
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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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2313
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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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4968
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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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1687
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September 12, 2019
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RFC 8555 Subproblems
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1
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1984
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July 23, 2019
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ACME v2 - Scheduled removal of ID from account objects
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1
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2508
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August 1, 2019
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Rejecting incorrectly padded EC JWKs
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1
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1010
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July 1, 2019
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March 13, 2019: End-of-Life for All TLS-SNI-01 Validation Support
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7
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80656
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March 15, 2019
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Rate limits: fixing certs per name rate limit order of operations gotcha
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0
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14037
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March 8, 2019
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Rate limit update: removal of renewal and new-issuance ordering constraints
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4
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5265
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March 8, 2019
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ACME v2 - Change to HTTP Status Code for HEAD new-nonce
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2
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3002
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January 24, 2019
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