Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2


Removes Performance counter names and Explain text for a service or device driver from the system registry.


Unlodctr DriverName

  • DriverName
    Removes the Performance counter name settings and Explain text for driver or service DriverName from the Windows ServerĀ 2003 family registry.
  • /?
    Displays help at the command prompt.


  • Incorrectly editing the registry may severely damage your system. Before making changes to the registry, you should back up any valued data on the computer.
  • If the information that you supply contains spaces, use quotation marks around the text (for example, "DriverĀ Name").

To remove the current Performance registry settings and counter Explain text for the Simple Mail Transfer Protocol (SMTP) service, type:

unlodctr SMTPSVC

Formatting legend

Format Meaning


Information that the user must supply


Elements that the user must type exactly as shown

Ellipsis (...)

Parameter that can be repeated several times in a command line

Between brackets ([])

Optional items

Between braces ({}); choices separated by pipe (|). Example: {even|odd}

Set of choices from which the user must choose only one

Courier font

Code or program output

See Also


Add counters to System Monitor
Troubleshooting Performance monitoring
Command-line reference A-Z
Command shell overview