How to fix Windows File Sharing and the dreaded “You might not have permission to use this network resource” message

Windows XP usually plays nicely, but occasionally you do the odd recalcitrant box that doesn’t want to play nice with the other computers, and share.

If you’ve ruled out the Windows Firewall (Make sure that Windows File Sharing has a checkbox in there for allowed), and everything else looks correct, but it still isn’t working, try the following:

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