Microsoft Is Finally Killing RC4

Published: (December 22, 2025 at 12:05 PM EST)
1 min read

Source: Schneier on Security

Microsoft finally ends RC4 support in Windows

After twenty-six years, Microsoft is finally upgrading the last remaining instance of the encryption algorithm RC4 in Windows.
of the most visible holdouts in supporting RC4 has been Microsoft. Eventually, Microsoft upgraded Active Directory to support the much more secure AES encryption standard. B…

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