All new CSOS users will need to obtain a personal CSOS signing certificate from the DEA. Applications for CSOS signing certificates can be found at www.deaecom.gov/applycert.html. Once new users have confirmation from the DEA that their CSOS signing certificate is approved, they will need to use our self-guided document click on the "Sign up for CSOS" button above to register their CSOS certificate number. If additional support is needed in setting up the CSOS platform, please schedule time with our CSOS Technical Support team via the following link: https://mck.ink/csos-webinar. Please note: you will need to have your CSOS certificate number prior to scheduling an appointment.