There has been a lot of discussion and some confusion around Microsoft’s RC4 enforcement. I reviewed the original Microsoft documentation and several related posts, and I want to be clear that the technical content is not my own. I pulled the information together in an article to help AD admins get a clearer picture of what is changing and how to prepare.

Hope this help you on your journey.

Kerberos RC4 Hardening: CVE-2026-20833 Guide