We recommend that you refer to the guidance below to assist you in applying, collecting and using HMRC SET certificates.
HMRC SET Certificates Pre-requisite Checklist
Cookies: where and why we use them.
For Users Generating Certificate Requests with Web Browsers
Prepare your Windows XP® PC for use with the online HMRC SET certificate portal.
Prepare your Windows Vista® PC for use with the online HMRC SET certificate portal.
Prepare your Windows® 7 PC for use with the online HMRC SET certificate portal.
Web Browser Diagnostics
Test your web browser's compatibility with the online HMRC SET certificate portal.
PKCS#10 CSR and Digital Certificate Diagnostics
Analyse your PKCS#10 Certificate Signing Request(s).
Installation diagnostic for HMRC SET certificates
Digital Certificate Management
Digital Certificates Export & Backup Using a Web Browser
CA Chain Installation Guide
Using Digital Certificates with Applications
Using your Digital Certificates with HMRC
If the above resources have not helped to solve the issue you're experiencing, please contact the Trustis Helpdesk by using our web-based
support request or emailing Trustis Support.