Hi Michael,
Following links should be helpful to you:
ServiceNow X.509 certificate is about to expire in xx days, is there any way to extend for a month a...
Step by Step on updating ADFS Certificate
Certificate X.509 about to expire-how to change it
Mark Correct if this solves your issue and also hit Like and Helpful if you find my response worthy based on the impact.
Thanks
Ankur
Regards,
Ankur
✨ Certified Technical Architect || ✨ 10x ServiceNow MVP || ✨ ServiceNow Community Leader
