The quick answer is No
Microsoft Security Essentials is average in many ways; it's OK but it isn't the best anti-virus software you can get, even for free. I suggest you check out some real world tests that put the anti-virus software through some tough tests and then list the results so you can see which is the 'best' or right one for you. A site like AV Comparatives is good for this.
There are many features that the Microsoft Security Essentials offers. Microsoft Security Essentials offers protection against different viruses that threaten a computer. It runs on Windows XP, Windows Vista and Windows 7, but not Windows 8.
Microsoft Security Essentials is antivirus software for Windows XP through Windows 7. It protects your computer against viruses, spyware, trojan horses and rootkits.
Windows Security Center can help enhance your computer's security by checking the status of several security essentials on your computer, including firewall settings, Windows automatic updating, anti-malware software settings, Internet security settings, and User Account Control settings.
Microsoft Security Essentials generally comes pre-installed with Windows. If you don't have it you can install it on the Microsoft site.
There are plenty of perfectly free Antiviruses. Assuming you have a legal copy of Windows, you can download Microsoft Security Essentials which is excellent. There is also Avast and AVG.
If you download Microsoft Security Essentials and make it scan your computer, it will find viruses that cause the error, and will allow you to remove them. If Microsoft Security Essentials can't run (because it needs to update), look for the update online.
You should always have an anti-virus and anti-malware program running when you are connected to the internet. Windows Firewall is only designed to prevent unauthorized access from a network, not for general protection from harmful programs. There are numerous commercial antivirus programs (Norton, MacAfee), several of which may be suggested when you first begin using your computer. The default Windows security program is Windows Defender, but there is a separate program, Microsoft Security Essentials, that has a slightly broader range of coverage.
Your virus protection is listed in the installed programs list, and should also have an icon on the desktop for Windows, or an entry on the list generated by clicking the Start button at lower left. If no virus protection is installed, you may be prompted to start either Windows Defender or Microsoft Security Essentials (both are free for all Windows PCs). There is also anti-malware in the Action Center for Windows 7 and Windows 8.
Microsoft’s Windows Security Center is a component of the Windows operating system that provides users with comprehensive protection from all of the most common security threats. Windows Security Center is not installed on all versions of Windows, but Windows XP, Windows Vista and Windows 7 all offer this service. Although Windows Security Center does not offer same level of computer protection as security programs offered by companies like Norton and McAfee, the Windows Security Center acts provides an excellent level of protection whenever a commercial security program has been disabled. Here is an inside look at the primary features of Windows Security Center and the areas in which it falls short. Windows Security Center lets computer users monitor the security of their computer system from a control panel that provides very easy to understand indications of whether everything is operating smoothly. The control panel indicates the current states of a computer’s security by turning green when everything is protected, yellow when there is something that a computer user should be aware of and red when there is a serious problem. Windows Security Center consists of Windows Defender, Windows Firewall and Windows Updates and typically runs smoothly in the background of the operating system by running system scans and downloading updates without a computer user needing to take any action. While Windows Security Center provides a good deal of coverage from the most major online threats that the average computer user is likely to encounter, it is also has a number of flaws. One of the most well-known flaws presented by this component of the Windows operating system is a vulnerability that allows scareware to increase the threat level indicated by Windows Security Center. Scareware is a type of malware that is designed to frighten computer users into installing a spyware program promoted as an antivirus program or to provide their credit card number to an unscrupulous software vendor. Some types of scareware are able to change the settings on Windows Security Center to indicate that there are damaging viruses that have infected the computer when the only malicious code on the computer is the scareware itself.
Microsoft offers some built-in virus protection with its Windows operating system. Microsoft Security Essentials is a security suite that includes, among other products, Windows Defender, a real-time malware protection and antivirus software product.
Anti-virus protection can be downloaded for free if you use a compatible Windows OS then Microsoft Security Essentials is available for free download online. Also, there are a variety of shareware programs available for protection against computer viruses also available online or at a local office supply store, for example Officemax and Office Depot; as well as superstores such as Best Buy.
There are a variety of options for spyware protection both online and in-store. Windows comes bundled with Microsoft Security Essentials, a basic anti-virus and spyware suite, and products like Avast!, McAfee, AVG offer spyware protection in their security suites. Spybot Search and Destroy, available online, is another common free option.