Welcome to the C-STOP Online Training Site

Important Update Regarding Platform Access - Platform Decommissioning

As previously communicated, this training platform was officially retired on November 30. All user access and progress data associated with that system is now permanently unavailable and cannot be restored.

We’re excited to introduce our new training platform, designed to offer a more streamlined and enhanced learning experience.

For new and returning users, please see the link below for access:
https://hsi.com/partners/cstop-training

Contact Support

Whether you’re new to CSTOP or renewing your certification, we’re here to help. For enrollment details and requirements, please call CSTOP at 425-822-8300.

For Login Support requests, please reach out to customercare@hsi.com

C-STOP
8916 122nd Ave NE
Kirkland, Washington 98033
Ph: 425-822-8300
Fax: 425-828-4514