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Microsoft Security Essentials – How to download, Install and Update

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This is part one of the series on Microsoft Security Essentials. How to Set-up Microsoft Security Essentials in Part two and Microsoft Security Essentials – Real-time protection, Alert levels and Actions in Part three.

Microsoft Security Essentials (MSE) is a no-cost security software for your PC from Microsoft. It can provide protection against all kinds of malware including viruses, trojans, worms and spyware. Unlike other free software, this also provides real-time protection. One can get an idea of what to expect from Microsoft Security Essentials from our earlier article Microsoft Security Essentials – What you need to know?.


Microsoft Security Essentials is available in many languages for Genuine Windows XP 32-bit, Windows Vista/WIN7 32-bit and for Windows Vista/WIN7 64-bit.

Download Microsoft Security Essentials



Double click the downloaded setup file to start the installation.


Click Next to continue.

MSE license agreement

Read the license agreement and then click I accept to accept the MSE license agreement. You can also read the license agreement on the web at MICROSOFT SOFTWARE LICENSE TERMS MICROSOFT SECURITY ESSENTIALS.

MSE Genuine Windows Validation

Microsoft Security Essentials needs to validate your copy of Windows prior to installation. Click Validate to start the validation process.

MSE passes Windows Genuine validation

Once the validation is complete, click Install to continue with the installation.

Ready to install MSE Installing MSE

The following screen is displayed once the installation is complete:


Note that the option to download the latest updates and start a scan for potential threats is pre-checked. Click Finish.

microsoft_security_essentials_download_install_update_08 microsoft_security_essentials_download_install_update_09

MSE will immediately search for and download the latest virus and spyware definitions and will commence a quick scan of the PC.

To upgrade MSE

Once the initial update and quick scan are completed, its time to look for any upgrades available for the MSE software itself.

MSE Upgrade MSE Upgrade Installation Wizard

Expand “Additional help options” and click on Upgrade Microsoft Security Essentials. If an upgrade is available, let MSE download and install it.

Part Two – Microsoft Security Essentials – How to Set-up

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