ID #1056

Why I am getting “Logon failure: user account restriction” while trying to access other Windows XP SP2 computers?

When I am trying to access other computer via the following ways.

Start > Run (Windows Key + R)

  • \\ServerName
  • \\ServerName\ShareName
  • \\ComputerName\ShareName
  • \\\ShareName 

It’s giving the following error

Windows Explorer
\\server 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.

Logon failure: user account restriction.  Possible reasons are blank passwords not allowed, logon hour restrictions, or a policy restriction has been enforced.

Solution :

  • Start > Run > type regedit.exe and press enter 
  • Then go to HKLM\System\CurrentControlSet\Control\Lsa\limitblankpassworduse
  • change from 1 to 0

Note : Do not use search in windows registry - it will have many entries. Its faster if you go to the required key manually.

Tags: Message, System Message

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