Windows 10 cannot access network shared locations or drives

Solution 1:

Within the latest “Windows 10 Fall Creators Update” the Guest access in SMB2 is disabled by default.

You can change this setting within your group policy settings.

Right click the Windows Icon at the bottom left of the task bar, or select the windows key + r

Within the run box, type “gpedit.msc”

Within the local Group Policy Editor, select “Administrative Templates”

Select “Network”

Select ”Lanman Workstation”

Double click “Enable Insecure guest logons” option

Tick the “Enable” option

Select OK

If this did not work consider checking this registry key too:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters\AllowInsecureGuestAuth

It should be set to 1 for your case. (Credits: zhqiat)

Note: By enabling insecure guest logons, this setting reduces the security of Windows clients. https://support.microsoft.com/en-us/help/4046019/guest-access-smb2-disabled-by-default-in-windows-10-server-2016

Solution 2:

One additional thing to look into.

If you apply the gpedit.msc solution as qore5 has mentioned and it still does not work, you may need to edit a separate registry key.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters

and change AllowInsecureGuestAuth to 1.

This has happened after several Windows 10 updates.