Webmaster Forum / Flash / General Flash Topics / July 2008

to close internet explorer, even if you don't think it is open:

On a winXP:
try ctrl-alt-del to the task manager and check the Processes tab for the
IEXPLORE process.  If it is there, then select it and click the End Process
button.

If Vista, I imagine the process is much the same, as it is still Windows,
though I couldn't say it is exactly the same for sure without Vista experience.

If Mac, then right-click (or option-click if you don't have a 2-button mouse)
on the icon in the dock and tell it to quit.

If the Flash installer still won't work, then fully shut down the computer,
and restart it, trying to install Flash again as soon as you sign in (before
you open anything).  If it still won't work after that, then contact adobe
directly (http://www.adobe.com/support/contact/)