Rc4 Deprecation
The latest Rc4 Deprecation coverage — news, analysis, and updates from the WindowsNews.AI desk.
FSLogix VDI at risk as Microsoft mandates AES-SHA1 Kerberos only from April 2026.
Microsoft will enforce AES-SHA1 as the only supported Kerberos encryption type starting April 2026, eliminating RC4-HMAC and DES-CBC-CRC entirely from Windows authentication. This security hardening...
Windows Kerberos RC4 Deprecation Deadline: Complete AES Migration Guide for Active Directory
Microsoft has quietly but deliberately set a firm deadline to end a decades-long compatibility compromise: RC4 (RC4-HMAC) will no longer be the assumed, permissive fallback for Kerberos ticket...
Microsoft sets AES as default Kerberos encryption, RC4 removal targeted by 2026.
Microsoft is embarking on a significant security overhaul of its Kerberos authentication protocol, with changes that will fundamentally alter how Windows domain controllers handle encryption. The...
Windows Kerberos Security Overhaul: AES Default, RC4 Deprecation by 2026
Microsoft is fundamentally changing a core security protocol that has been in place for decades, announcing that Windows Kerberos authentication will default to AES encryption types while completely...
Microsoft Kerberos Security Overhaul: AES Defaults Replace RC4 by 2026
Microsoft's announcement that it will stop issuing RC4-based Kerberos tickets by default on domain controllers marks a significant turning point in Windows enterprise security. After more than two...
Windows Kerberos Security Overhaul: AES-SHA1 Default, RC4 Disabled by Mid-2026
Microsoft has announced a significant security milestone that will reshape Windows authentication infrastructure for years to come. By mid-2026, domain controllers running Windows Server 2008 and...
Microsoft's Kerberos Security Overhaul: RC4 to AES-SHA1 Default Change Explained
Microsoft is implementing one of the most significant security changes in Windows Server history by flipping the default Kerberos encryption algorithm from the vulnerable RC4 to the more secure...
Microsoft Sets November 2024 as First Phase for Active Directory RC4-to-AES Migration
Microsoft's decision to phase out the RC4 cipher from Active Directory authentication marks a decisive response to decades of risky backward compatibility—but it also forces a hard reckoning for...