Are you ready for Microsoft’s July 2026 deadline?
Microsoft’s July 2026 enforcement deadline for RC4 deprecation in Kerberos authentication is almost here. And if you haven’t mapped your RC4 dependencies yet, you might be sitting on a ticking clock that could trigger authentication failures, application outages, and security blind spots across your AD environment.
But RC4 exposure hides in unexpected places: undefined account attributes, service accounts that have never had AES keys generated, legacy systems that can’t support AES at all, and even human user accounts that fly under the radar. Most organizations don’t know what they don’t know.
This checklist cuts through the complexity. In five targeted questions, it helps your Identity Security team pinpoint exactly where your RC4 risks live, before enforcement makes the discovery for you.
Use it to find out:
- Which accounts have
msDS-SupportedEncryptionTypesundefined — and why that’s a hidden RC4 risk at scale
- Which service accounts are carrying RC4-only keys due to pre-2008 password history
- Which machine accounts are tied to legacy OS versions that can’t support AES
- Whether human user accounts are also part of your RC4 exposure
- Why real-time authentication traffic visibility is the only way to be certain
Get the checklist, work through it with your team, and know exactly where you stand before the deadline hits.
