why authentication required downloading from microsoft

[Guest]

I'm using windows XP professional with SP1 and almost all the updates installed. From few days, when i try to download anything from microsoft.com, a box appeared and asks me for authentication. While on ther PCs the download demands no authentication.

Please help me ...
--
Muhammad Zubair
Network Administrator/Webmaster
National Textile University
Faisalabad, (37610) Pakistan
Phone 092-303-6706378

 

[Malke]

I'm using windows XP professional with SP1 and almost all the updates
installed. From few days, when i try to download anything from
microsoft.com, a box appeared and asks me for authentication. While on
ther PCs the download demands no authentication.

Please help me ...

This is extremely suspicious. It very much sounds like your computer has
been hijacked by a redirector. What does a scan with a current
antivirus program (meaning a version not earlier than 2002 and using
updated virus definitions) show? Have you done any spyware removal?
Remove spyware with Spybot Search & Destroy from
www.safer-networking.org and Ad-aware from www.lavasoftusa.com. Be sure
to update these programs before running them. These programs are free,
so run them both since they complement each other. It is best to run
antivirus and spyware removal tools in Safe Mode. You may also want to
run CWShredder and HijackThis from http://aumha.org/freeware.htm.
Although CWShredder is no longer being updated, it will still clean
older variants of the CoolWebSearch malware. Please read the
instructions carefully.

Malke