When you try to log off a Windows Vista-based computer, you may receive the following error message:

AtBroker.exe - Application error
The application failed to initialize properly (0xc0000142).
Click OK to terminate the application.

Additionally, you may hear a “ding” sound.

Notes

• The “ding” sound implies a system error.
• The error message and the “ding” sound automatically disappear after several seconds. Then, the logoff process continues.
• This problem is more likely to occur when you use a program that runs on the secure desktop of Windows Vista. For example, you use screen magnifier software or a screen reader program.

When you try to restart or to shut down Windows Vista, you receive the following message:

The following programs are still running:

• Explorer.exe
  Playing logoff sound

To close these programs and restart your computer,
click Restart Now.

You may lose work that you haven’t saved.

Note: If you are trying to shut down Windows Vista, “click Shut down now” appears in this message instead of “click Restart Now.”

If you click Restart Now or Shut down, as appropriate, Windows Vista restarts or shuts down as expected. This behavior also occurs if you just wait.