If your computer is running any other Windows operating system, you must be logged on as an administrator to install the latest definition file.When you are prompted for an administrator password or confirmation, type the password or provide confirmation, and then wait while the definition files are installed.

Right-click nis_full.exe, click Run as administrator and then click Yes.

If your computer is running Windows Vista or Windows 7, browse to the folder where you saved the definition file.

To install the saved definition update file: If you click Save, remember the name of the folder where you save the file. Step 3: Save or run the Network Inspection System definitions for Microsoft Security Essentials After you download the latest definition updates, click Run to install the definition immediately, or click Save to save it to your computer. 0 or higher, please also execute the following steps. If you are running Microsoft Security Essentials build. Note: If you do not have an administrator account on the computer, ask an administrator to log on and install the definitions file for you. Browse to the folder where you saved the file, and then double-click Mpam-fe.exe to install the latest definition file. Right-click Mpam-fe.exe, click Run as administrator and then click Yes.

If your computer is running Windows Vista or Windows 7, click Start, click Documents, and then locate the folder where you saved the definition file.If you click Save, remember the name of the folder where you saved the file. Microsoft Security Essentials Definition Updates downloads and installs the latest Microsoft Security Essentials for Windows definition updates.Īfter you download the latest definition updates, click Run to install the definition file immediately or click Save to save it to your computer.

Windows security essentials download