I had the same problem today.
I could not access the memory stick through the windows explorer.
I was however able to access the contents through MS-DOS.
I backed up the data through DOS and formatted the Memory Stick using the following tool.
ftp://ftp.compaq.com/pub/softpaq/sp2...00/SP27213.exe

More details on what causes this can be found here
http://www.uwe-sieber.de/usbtrouble_e.html

hope this helps...

Rgs,
Ravi

EggHeadCafe.com - .NET Developer Portal of Choice
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Ravi Kiran Arepalli wrote:
> I had the same problem today.
> I could not access the memory stick through the windows explorer.
> I was however able to access the contents through MS-DOS.
> I backed up the data through DOS and formatted the Memory Stick using the following tool.
> ftp://ftp.compaq.com/pub/softpaq/sp2...00/SP27213.exe
>
> More details on what causes this can be found here
> http://www.uwe-sieber.de/usbtrouble_e.html


I've written this page and so far I have no idea what
causes this 'access denied' problem...


Uwe