However after installing the MSE, you would have to update it with latest virus definitions which requires a 40Mb download.
If you encounter problems while trying to install definition updates for Microsoft Security Essentials (internet problems, update stops in the middle way, etc) you can download and install the latest definition updates for computers manually.
Unlike other antivirus programs, you need not to do anything with MSE. Just download the latest definition updates (46Mb) and double click on it (mpam-fe.exe) to install. That’s all.
Note: If your computer is running Windows Vista or Windows 7, right-click Mpam-fe.exe, and select Run as administrator, and then click Run to install.
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