i’ve run into an issue where windows 10 desktop could not anymore access a simple samba share on a linux server; that linux server did not have any type of authorization put in place.
Windows would randomly give errors ” might not have permission to use this network resource” or “Windows cannot access \\Server\ShareYou do not have permission to access”. i’ve found a solution at technet:
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essentially 1709 disables unauthenticated access to shares using SMB2. There is a GPO that can easily be flipped to fix the problem if setting up auth isn’t an option. Here is the policy in question.
Computer configuration\administrative templates\network\Lanman Workstation “Enable insecure guest logons”
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meh!