Cant use switch User Feature, Windows XP Pro, HELP!!!!!!!!

[pakiskm]

Hi, Fast Switching User feature is enabled on my windows
xp pro computer. However, when i click on switch user
from the log off screen, it does go to the welcome screen
but when i click on the other acount to log in, the
screen flashes once and returns to the welcom screen. I
can log on to that account if i log off from the first
account but cant keep boht logged on.

Bottom line, i cant have two accounts logged in at the
same time, i have to log off from one to log on to the
other.

I do not know if any program on my computer is doing
this, or MS SP1. Please HELP!!!!!!!!!!

P.S - I have BadBlue web server installed, which is
working fine for its purpose. Can that be causing this?

 

[Michael Solomon \(MS-MVP Windows Shell/User\)]

First thing to check are the applications you have installed that run on
bootup. Many applications were not created for a multi-user environment and
some of them may cause an issue with fast user switching. My own experience
was that I was able to switch but I'd receive an alert the application would
be disabled in the account to which I had switched. However, that doesn't
preclude the possibility that an application might prevent you from
switching altogether.

I'd look at what's loading on startup, especially those applications that
place icons in the notification area (the area to the left of the clock) as
one of them is the likely culprit. You may have to remove that application
in order to test and find the source of the problem.