The SMS Mirror Driver

The SMS Mirror driver is the root cause of the problem, with help from a dated video driver, the SMS Remote Control application (Wuser32.exe), and an unsupported operating system (Windows 2000).

So what does the SMS Mirror Driver do?:

Video acceleration significantly speeds up your Remote Control sessions clients.  For video acceleration on clients running Windows 2000 or later, SMS uses a Mirror driver.  The Mirror driver can simultaneously display the same output to several video devices and has no dependencies on the client’s video driver.
– Microsoft Systems Management Server 2003 Operations Guide.

We received a fault report:

My desktop icons are grey colored.

It took some investigation, as the customer left out some details.  Here they are:

  • the problem was occurring on a system they were remote controlling with the SMS Remote Control application.
  • it was an intermittent problem.
  • it was in a development environment.

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