Kerberos RC4 Impact & Recovery
In April 2026, Microsoft will begin retiring RC4 as the default Kerberos encryption type.
Many Active Directory environments still rely on RC4 through service accounts, legacy systems, or older app configurations. As this change is applied, you may start to experience problems.
Swipe through our carousel to learn what to watch out for and how to resolve issues, while addressing RC4 dependencies ahead of July enforcement.
For more information, download our one-pager that dives deeper into what’s changing, when, and what you need to do.
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Conrad Lintow
For over 25 years, Conrad Lintow has advised leading organizations from financial and other sectors on their most important IT security concerns. He maintains a broad knowledge base that enables him to solve complex challenges for clients. Conrad specializes in enterprise architecture, security, Active Directory, Directory Migrations, and Microsoft Entra ID.