Logon failure: the user has not been granted the requested logon type at this computer

On the computer containing the shared files:

Download the following and install it

Windows Server 2003 Resource Kit Tools
http://go.microsoft.com/fwlink/?LinkId=4544

after installation is complete,

click on: Start --> All Programs --> Windows Resource Kit Tools --> Command Shell

Then enter the following commands. (Attention: they are case sensitive.)

net user guest /active:yes
ntrights +r SeNetworkLogonRight -u Guest
ntrights -r SeDenyNetworkLogonRight -u Guest

The first command enables network access for Guest, the two subsequent ones change two different policies to allow network access for Guest.

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