Windows 10 since 21H1 | Failed access to samba guest shares

You can’t connect to a samba server configured with

map to guest = Bad User

Don’t try this at home: Re-Enable the guest account fallback

Your risky solution:

Tune your GPO.

Computer Configuration\Administrative Templates\Network\LanMan Workstation\Enable Insecure Guest Logons

I’ve had faced situation when this didn’t do the trick. I had to tune the registy:

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters] “AllowInsecureGuestAuth”=dword:1


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