Security News > 2024 > June > Microsoft deprecates Windows NTLM authentication protocol
Microsoft has officially deprecated NTLM authentication on Windows and Windows servers, stating that developers should transition to Kerberos or Negotiation authentication to prevent problems in the future.
New Technology LAN Manager, better known as NTLM, is an authentication protocol first released in 1993 as part of Windows NT 3.1 and as the successor to the LAN Manager protocol.
NTLM has been extensively abused in cyberattacks known as 'NTLM Relay' attacks, where Windows domain controllers are taken over by forcing them to authenticate against malicious servers.
Despite Microsoft introducing new measures to defend against those attacks, like SMB security signing, attacks on NTLM authentication continue.
NTLM will still work in the next release of Windows Server and the next annual release of Windows.
Microsoft fixes Windows Server bug causing crashes, NTLM auth failures.
News URL
Related news
- Microsoft discloses unpatched Office flaw that exposes NTLM hashes (source)
- Microsoft: Windows 11 22H2 reaches end of support in 60 days (source)
- Microsoft is killing the Windows Paint 3D app after 8 years (source)
- Windows Server August updates fix Microsoft 365 Defender issue (source)
- Microsoft retires Windows updates causing 0x80070643 errors (source)
- Microsoft removes FAT32 partition size limit in Windows 11 (source)
- Microsoft to rollout Windows Recall to Insiders in October (source)
- Microsoft to roll out Windows Recall to Insiders in October (source)
- Microsoft: August updates cause Windows Server boot issues, freezes (source)
- Microsoft Delays Recall Launch for Windows Insider Members Until October (source)