Event ID 1000 Is Logged in the Application Event Log

This article applies to Windows 2000. Support for Windows 2000 ends on July 13, 2010. The Windows 2000 End-of-Support Solution Center is a starting point for planning your migration strategy from Windows 2000. For more information see the Microsoft Support Lifecycle Policy.


The following event may be logged in the Application event log:

Event ID: 1000
Event Source: Userenv
Windows cannot determine the user or computer name. Return value (1722).
The client computer may also experience an extremely slow logon.


This behavior can occur if the address for the configured preferred DNS server on the client is invalid or unreachable.


To resolve this behavior, correct the DNS address in the Internet Protocol (IP) properties:

  1. Right-click My Network Places, and then click Properties.
  2. Right-click Local Area Connection, and then click Properties.
  3. Click Internet Protocol (TCP/IP), and then click Properties.
  4. Type the correct DNS address in the Preferred DNS server box.

Article ID: 261007 - Last Review: Dec 16, 2009 - Revision: 1