To align with evolving industry requirements, Sectigo will begin enforcing a maximum TLS certificate validity of 199 days starting March 12, 2026. In addition, as of March 12, 2026 the Domain Control Validation (DV) reuse period will be restricted to 198 days.
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To align with evolving industry requirements, Sectigo will begin enforcing a maximum Code Signing certificate validity of 459 days starting February 23, 2026
To align with CA/B Forum compliance requirements and provide a margin of safety before the official September 15 enforcement deadline, Sectigo will transition to enforcement mode for Multi-Perspective Issuance Corroboration (MPIC) on September 13, 2025.
As of March 1, 2021 Sectigo will remove street address and zip/postal code information from all public certificates.
This week Microsoft disclosed the existence of a critical vulnerability in how Windows operating systems validate ECC-based x.509 certificates and released patches for affected versions that are supported.