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SMB Access - Guest access is disabled with SMB2

https://docs.microsoft.com/en-us/troubleshoot/windows-server/networking/guest-access-in-smb2-is-disabled-by-default

Default registry value:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters] "AllowInsecureGuestAuth"=dword:0

Configured registry value:
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters] "AllowInsecureGuestAuth"=dword:1


Resolution

If you want to enable insecure guest access, you can configure the following Group Policy settings:


  1. Open the Local Group Policy Editor (gpedit.msc).
  2. In the console tree, select Computer Configuration > Administrative Templates > Network > Lanman Workstation.
  3. For the setting, right-click Enable insecure guest logons and select Edit.
  4. Select Enabled and select OK.
Creation date: 10/20/2020 1:39 PM (bruce@oecnw.com)      Updated: 6/3/2021 3:07 PM (jon@oecnw.com)
Files
AllowInsecureGuestAuth.reg
338 b