Security software: Downloads and trials

Download antivirus software, firewalls, spyware removal tools, and more to improve the security of your computer and to help keep it running smoothly.

From Microsoft

Free antispyware: Windows Defender (Beta 2)

Download our free antispyware software to help protect your PC from spyware and other potentially unwanted software.

Microsoft Windows XP Service Pack 2 (SP2)

Get better protection against viruses, hackers, and worms. This service pack includes Windows Firewall, Pop-up Blocker for Internet Explorer, and the Windows Security Center.

Get software updates

•	Microsoft Update

•	Office Update

Get a free PC safety scan

Windows Live OneCare safety scanner

Block pop-up ads with Pop-up Guard

MSN Toolbar

From other companies

Microsoft is not responsible for the quality, performance, or reliability of third-party tools.

Antivirus software & firewall protection

Get special offers from the following software companies for antivirus and firewall packages.

•

Computer Associates

90 day free trial

•

Antivirus

•	F-Secure 6-month free trial

•

McAfee

90-day free trial

•	Antivirus
•	Firewall

•	Panda Software 90-day free trial

•	Symantec (Norton) 90-day free trial

•	Trend Micro 90-day free trial

Antispyware

•	Windows Defender (Beta2) No charge

•	Lavasoft Ad-Aware No charge

•	Spybot Search & Destroy (S&D) No charge Important: Makers of spyware and other unwanted software might disguise their programs as antispyware tools. Click the links to the programs above or ask someone you trust to recommend a tool before you download and install it.

Important: Please uninstall any antivirus software you are currently using before installing a new product; having two different programs might cause problems on your computer.

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