HOME CONTACT ME PHOTO GALLERY NEWS      

 
 
To protect your computer against viruses, do the following:

Step 1: Enable a Firewall

Before you take other steps, make sure you have a firewall activated to help protect your computer against infection. If you have a hardware firewall in place for your home or workplace connection, or if you use the firewall included with Windows XP, the Sasser worm is most likely blocked. If your computer has been infected, a firewall will help limit the effects of the worm on your computer. For comprehensive guidance to installing and enabling a firewall, see the Microsoft Protect Your PC site.

Step 2: Install the Required Update

To help protect your computer against the Sasser worm and its variants, you must first download and install security update 835732, which was released with Microsoft Security Bulletin MS04-011. You can find update 835732 on the Windows Update Web site listed in the Critical Updates and Service Packs section. You can also download and install this update manually from the Microsoft.com Download Center. To find the download for your operating system, refer to Technical Security Bulletin MS04-011.

Note  If you installed the updates for MS04-011 manually or through Automatic Updates before Friday, April 30, then you are already protected against this issue.

Step 3: Automatically Check For and Remove Sasser

You can use this tool to search your hard disk for and try to remove Sasser.A, Sasser.B, Sasser.C, and Sasser.D. To do so, click Check My PC for Infection.

Important  To use this tool, you must be running Windows XP or Windows 2000, and you must have already installed the update released with Microsoft Security Bulletin MS04-011.



Note  After you click Check My PC for Infection, a Microsoft End-User License Agreement is displayed. In the window, click I Agree, and then click Continue. If you see a message advising you that the tool is loading, click OK to proceed.

Note  If you have difficulty running the tool from this page, it may be due to your browser's security settings. If you have any problems, try downloading the tool directly from the Microsoft.com Download Center and then running it manually.

Step 4: Review Additional Technical Resources

If the scanning and cleaning tool does not work for you, try using one of the free worm removal tools available at these antivirus software vendors' Web sites:

If you prefer to remove the worm manually (for advanced users only), see the Microsoft Product Support Services (PSS) Security Response Team alert for technical guidance.

IT professionals can get a technical status report on Sasser by watching the May 4 "Technical Update on the Sasser Worm" webcast.

Step 5: Learn How to Protect Your PC

To help protect your computer against a wide variety of security threats, see Protect Your PC.