DigiCert G1 Root CA Distrust
UPDATE: February 16, 2026
ClearBlade has obtained a special extension for the IoT Core G1 server certificates. The deadline for migrating all devices to the G5 root certificate has been extended to March 29, 2027 at 10am CT.
As part of standard internet best practices, DigiCert has announced that the distrust date for the G1 Root CA will be April 15, 2026. ClearBlade will provide customers a path to migrate from the G1 to the G5 root file from now until end of year 2025.
ClearBlade understands this is a complex issue and has enabled its sales, support, and services teams to provide additional assistance. If you have any questions, please do not hesitate to open a Service Desk Ticket or email your dedicated customer success agent.
To ensure your devices experience no period of disconnection, the following schedule will be used:
Schedule:
September 15, 2024: New URLs are available for IoT Core users to begin migrating ECC or RSA-based cryptography users. Click here to find those URLs.
December 31, 2025: Technical Support no longer available for devices connecting using the legacy URLs and the DigiCert G1 Root CA.
March 29, 2027 - 10am CT: The legacy URLs will be updated to use the TLS Certificate signed by the DigiCert G5 Root CA. Any devices still reliant on DigiCert G1 Root CA will no longer be able to connect via MQTT or HTTP to any IoT Core Region.
More Information: