Windows 10: Unable to fully Disable NTLM authentication in Windows VM.

Discus and support Unable to fully Disable NTLM authentication in Windows VM. in Windows 10 Gaming to solve the problem; After disabling NTLM authentication on a Windows VM, users are unable to log in or connect via RDP. Kerberos is enabled and configured. Error: "An... Discussion in 'Windows 10 Gaming' started by Pooja Chandel pchandel, Jun 12, 2025 at 6:12 AM.

  1. Unable to fully Disable NTLM authentication in Windows VM.


    After disabling NTLM authentication on a Windows VM, users are unable to log in or connect via RDP. Kerberos is enabled and configured. Error: "An authentication error has occurred. The function requested is not supported. This could be due to CredSSP encryption oracle remediation."Need assistance ensuring Kerberos-only authentication works with RDP.After disabling the NTLM, I am unable to login to the VM. I can not able to DO RDP . Please note - In the same system i have enabled Kerberos. I am getting below error when trying to access the VM

    :)
     
    Pooja Chandel pchandel, Jun 12, 2025 at 6:12 AM
    #1
  2. hulllugu Win User

    NTLM authentication (or Windows Integrated auth) on E50 not working - any possibilities?

    Seems that E50 browser does not accept NTLM authentication (or Windows Integrated auth).

    Is there any browser for E50 which works with NTLM auth (or Windows Integrated auth) ?

    Thx,

    Lauri.
    Message Edited by on 14-Dec-2006

    08:58 PM
     
  3. key authentication

    Quick poll! I finally got around to securing my remote VM by disabling password authentication and using key authentication only for SSH. Curious if others do the same.
     
  4. David Ci Win User

    Unable to fully Disable NTLM authentication in Windows VM.

    KB3189866, KB3193494 and KB3194496 cause problem with Chrome and Firefox with authenticated proxy (SQUID)

    I'm experiencing the same issue with a company proxy McAfee Web Gateway and a Windows 10 client, after the abovementioned update

    I've traced the connection and discovered that the problem is related to Google Chrome not completing the 3-way handshake of NTLM authentication (in particular, step 3)

    The issue is very weird considering that, from a comparison between MS Edge and Chrome, step 1 and 2 are the same. Then Edge completes the procedure with the authentication message (step 3) and Chrome stops the sequence returning to the user ERR_INVALID_AUTH_CREDENTIALS.

    It looks like there is something in the KB code that breaks the NTLM authentication
     
Thema:

Unable to fully Disable NTLM authentication in Windows VM.

Loading...
  1. Unable to fully Disable NTLM authentication in Windows VM. - Similar Threads - Unable fully Disable

  2. unable to rdp vm after disabling NTLM auth on windows

    in Windows 10 Gaming
    unable to rdp vm after disabling NTLM auth on windows: We are trying to authenticate Kerberos authentication by disabling NTLM authentication setting from Group policy.but after doing this, windows is not allowing to login .Can I get help in this topic?...
  3. unable to rdp vm after disabling NTLM auth on windows

    in Windows 10 Software and Apps
    unable to rdp vm after disabling NTLM auth on windows: We are trying to authenticate Kerberos authentication by disabling NTLM authentication setting from Group policy.but after doing this, windows is not allowing to login .Can I get help in this topic?...
  4. Unable to fully Disable NTLM authentication in Windows VM.

    in Windows 10 Software and Apps
    Unable to fully Disable NTLM authentication in Windows VM.: After disabling NTLM authentication on a Windows VM, users are unable to log in or connect via RDP. Kerberos is enabled and configured. Error: "An authentication error has occurred. The function requested is not supported. This could be due to CredSSP encryption oracle...
  5. "Authentication failed because NTLM authentication has been disabled" Cannot connect to...

    in Windows 10 Gaming
    "Authentication failed because NTLM authentication has been disabled" Cannot connect to...: Problem:I updated my PC from 23H2 to Windows Pro 24H2 and can no longer see my Synology NAS or access the pre-mapped network drives. Attempts to remap the drives fail, “Authentication failed because NTLM authentication has been disabled.” This is my third time trying to fix...
  6. "Authentication failed because NTLM authentication has been disabled" Cannot connect to...

    in Windows 10 Software and Apps
    "Authentication failed because NTLM authentication has been disabled" Cannot connect to...: Problem:I updated my PC from 23H2 to Windows Pro 24H2 and can no longer see my Synology NAS or access the pre-mapped network drives. Attempts to remap the drives fail, “Authentication failed because NTLM authentication has been disabled.” This is my third time trying to fix...
  7. RDP Error "Authentication failed because NTLM authentication has been disabled"

    in Windows 10 Gaming
    RDP Error "Authentication failed because NTLM authentication has been disabled": If this has been covered, I ask that someone point me to a solution. I have the following two devices:Workstation with Windows 11 24H2Laptop with Windows 10 22H2Home server with Linux Mint 22.1 Cinnamon Version 6.4.6Using my Windows 11 WS, if I attempt to RDP to my Laptop, I...
  8. RDP Error "Authentication failed because NTLM authentication has been disabled"

    in Windows 10 Software and Apps
    RDP Error "Authentication failed because NTLM authentication has been disabled": If this has been covered, I ask that someone point me to a solution. I have the following two devices:Workstation with Windows 11 24H2Laptop with Windows 10 22H2Home server with Linux Mint 22.1 Cinnamon Version 6.4.6Using my Windows 11 WS, if I attempt to RDP to my Laptop, I...
  9. Establish an NTLM SSP by default during authentication

    in Windows 10 Gaming
    Establish an NTLM SSP by default during authentication: Problem: how to establish an SSP in the NTLM protocol mandatory, without the possibility of disabling it on the receiving sideserver.Where and what parameters need to configure? Is it in Group Policy or Registry? My team didn't find it.The parameters known to me, such as...
  10. Establish an NTLM SSP by default during authentication

    in Windows 10 Software and Apps
    Establish an NTLM SSP by default during authentication: Problem: how to establish an SSP in the NTLM protocol mandatory, without the possibility of disabling it on the receiving sideserver.Where and what parameters need to configure? Is it in Group Policy or Registry? My team didn't find it.The parameters known to me, such as...