Windows Authentication Failure - AllowInsecureGuestAuth

Hack to allow guest authentications to server following Windows 11 Update

Windows_Authentication_Failure_-_AllowInsecureGuestAuth_AllowAuth.jpg

Problem

Following a windows update, the connection to a network drive cannot be authenticated any more.

Solution

Add a parameter to the registration "AllowInsecureGuestAuth"

1. Regedit
2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters
3. Right click add new
4. Select DWORD
5. AllowInsecureGuestAuth
6. Value=1

en none 0

Draft