Not authorized to login to share in Windows 10 build 9926

After automatic update of Windows 10 build 9926 of Windows 10 I could no longer acces the new Synology Diskstation.

“\\share is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions.

The account is not authorized to login from this station”

After lots of searching on the net it turned out that Microsoft has increased the security in this new build. And it seems that there is only a registry hack to let build 9926 connect like any other versions of Windows.

You have to add:

AllowInsecureGuestAuth (DWORD 32-bit) and set it to 1

in

HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters

 

That would let me connect as the guest account on my Synology Diskstation again.

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