ForeFront Definition Updates

To download the Microsoft Forefront Client Security antimalware definition update file(Mpam-fe.exe) for 32-bit (x86-based) versions of Windows, click the following link:
http://go.microsoft.com/fwlink/?LinkID=87342&clcid=0x409

To download the Microsoft Forefront Client Security antimalware definition update filefor 64-bit versions of Windows, click the following link:
http://go.microsoft.com/fwlink/?LinkID=87341&clcid=0x409

Note You must be running a 64-bit version of Windows to run a 64-bit version of Microsoft Forefront Client Security. The 64-bit versions of Windows include x64-based versions.

After you click the appropriate link, click Run to install the definition update file immediately. Or, click Save to save the file to the computer. If you click Save, remember the folder where you save the file.

To install the saved file, click Start, click Run, locate the folder where you saved the file, double-click the file, and then click OK.

Note To install the file on a Windows Vista-based computer, right-click the file, and then click Run As Administrator to install it.

If you are prompted for an administrator password or confirmation, type the password or click Continue.

When the definition update file runs, a file extraction dialog box appears. The dialog box indicates that the definition update is installing. After the file extraction dialog box closes, you can verify that the Microsoft Forefront Client Security definitions have been updated. To do this, open Microsoft Forefront Client Security, and then check the definition version at the bottom of the Microsoft Forefront Client Security Home dialog box.

Corporate customers should use Windows Server Update Services (WSUS) version 2.0 or a later version to distribute Microsoft Forefront Client Security definition updates.

You can use the -q command-line switch with the Microsoft Forefront Client Security definition update file. This switch installs the definition update in quiet mode. Quiet mode suppresses the file extraction dialog box. To install the definition update in quiet mode, type the following command:
Mpam-fe.exe -q
Note You must use an account that has administrator rights to run this command.