Eliminating NTLM in Windows - Microsoft Technical Takeoff

Event details

NTLM (New Technology LAN Manager) in Windows 11 is being phased out in favor of more secure protocols like Kerberos. Learn the history of NTLM and the associated security risks. Explore how auditing ...

Heather_Poulsen

Updated Feb 26, 2026

Technical Takeoff

AWTG

Occasional Reader

Mar 02, 2026

Is it NTLMv1 that will be deprecated later this year or NTLMv2 also? It's not quite clear.

Heather_Poulsen

Community Manager

Mar 02, 2026

AWTG - (From Steve_Syfuhs) - NTLMv1 has already been deprecated for more than a decade. It was deprecated when we introduced Credential Guard in Windows 10. As such, we're talking NTLMv2.

AWTG
Occasional Reader
Mar 03, 2026
Hi Heather_Poulsen sorry I meant 'retired'. As per KB ID: 5066470
NTLMv1 will be blocked in Oct'26. I want to confirm that's still the plan or is v2 also set to be disabled later this year?
- mariam_gewida
  Microsoft
  Mar 03, 2026
  Our plan is for NTLMv2 to be disabled by default in the next major release of server and client: Advancing Windows security: Disabling NTLM by default - Windows IT Pro Blog