Allowing Network Access with Blank Passwords (XP and Vista)

Although you can log in locally without a password, by default, WindowsXP Pro does not allow network users to access the computer without a password. Typically you will receive an Unknown error 31 if this is the case.

To change this setting:

1. Run gpedit.msc
2. Go to Computer Configuration / Windows Settings / Security Settings
   
   / Local Policies / Security Options
3. Double click on Accounts: Limit local account use of blank passwords to console login only
4. Disable this option

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Laxman