Windows: AllowInsecureGuestAuth

· 1 min read

On an Ubuntu 22.04 server I have Samba shares for my Windows clients. The clients should be able to use the shares as anonymous users.

My smb.conf file:

[10TB HDD Mirror]
   path = /hdd1/files
   writeable = yes
   browseable = yes
   public = yes
   create mask = 0777
   directory mask = 0777
   force user = root

When I try to access the shares from a Windows client, I get the following error:

AllowInsecureGuestAuth

To fix this, I need to allow insecure guest auth on the Windows client. To do this, I need to add/change the AllowInsecureGuestAuth registry key.

  1. Open the Registry Editor by pressing Win + R, typing regedit, and pressing Enter
  2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters
  3. Right-click on the right pane and select New → DWORD (32-bit) Value
  4. Name the new value AllowInsecureGuestAuth and set its value to 1

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