The article below can apply to any of your systems.  Whether they have ERP solutions we represent such as Sage MAS90, MAS200, MAS500, SAP Business One, Microsoft Dynamics AX, NAV, GP or SL.  The one solution we have seen cause problems with file based solutions like MAS90 and MAS200 is Symantec Endpoint and don’t recommend it for our Sage MAS 90 and MAS 200 customers.

from wikiHow – The How to Manual That You Can Edit

Overwhelmed by all the choices? People bugging you about antivirus, antispyware, anti-adware, firewalls, temporary file deleters, registry cleaners, and all the other things that you don’t think are necessary? This article covers the top free choices for your computer.


  1. Get an antivirus software. This is the most important thing you need, and has probably the most options.
    • In terms of free software, most sources recommend either:
    • AVG is supposed to be the best for non-technical users, while Avast! (which no longer has a media player interface) is for more technical users. Avira Antivir does the best at finding malware. It pops up an ad after updating, but there are ways to remove it.
    • If you insist on paying, most people agree that NOD32 is the best in terms of performance, thoroughness, and system resource usage.
  2. Get antispyware and/or anti-adware software. While most antivirus software will also remove spyware and/or adware, an antispyware/adware product is recommended.
    • While many people don’t like Microsoft products, Windows Defender is great at blocking changes made to your computer, and it also detects some malware.
    • Other options, which can be used safely along with Windows Defender, are Spybot Search & Destroy, which can tell you when programs change your settings with “Teatimer” and can “immunize your computer” against threats, and Ad-Aware Free which is supposed to be great at removing spyware cookies plus other threats, but the newest version is a little hard to use.
    • SpywareBlaster, which immunizes your computer like Spybot Search & Destroy, is great because you don’t have to run it in the background.
      • Another great program from the same company is SpywareGuard, which prevents spyware from being executed.
    • In terms of paid software, the paid version of all of these products works fine, but CounterSpy is preferable for many people.
  3. Get a firewall. While many people stick with the Windows Firewall that comes with Windows XP and Vista, that one isn’t very good at blocking malware that is already on your computer from calling home.
    • While ZoneAlarm Firewall is probably the most popular, some people have problems with memory usage and crashing using this one.
    • The Sygate Firewall used to be one of the best, but is no longer free, so Comodo Firewall seems to be the best choice. It can be intrusive, so make sure to use the ‘Scan for Known Applications’ feature.
    • Sunbelt-Kerio Personal Firewall is also a good choice.
    • Another popular choice recommended by many people is Online Armor Free edition.
    • If money is not a problem for you, feel free to download the paid version of these products or Norton Internet Security which includes the Sygate Firewall.
    • Make sure to disable the Windows Firewall if using a separate one.
  4. Get a safe internet browser. While Internet Explorer 6 comes with most computers, it is the least safe browser to use!
    • If you don’t feel comfortable using other programs (Internet Explorer is the most simple), then at least upgrade to Internet Explorer 7.
    • Recommended browsers are Firefox, which is pretty simple to use and is probably the safest browser around, and Opera, which is the fastest browser in tests, and comes packaged with many things you have to download separately with Firefox (IRC, Mail, Text-to-Speech, Mouse Gestures), but is more confusing to use.
  5. Use a safe email program. Outlook Express comes with Windows, but there are many ways it can get infected with malware, causing your computer to be used to spread viruses.
    • The best software as a replacement for Outlook is Thunderbird. Made by the developers of Firefox, it has a great learning spam filter and can alert you when it thinks a message is dangerous.
    • Other options are online email: GMail automatically deletes messages with viruses with its incorporated virus-scanner, and false-positives or spam getting into your mailbox only happens once a month or so. Yahoo! Mail has unlimited space, and has a virus scanner just like GMail’s, but some people prefer GMail’s interface.
  6. Get a temporary file cleaner/registry cleaner.
    • The most popular one is CCleaner, formerly known as Crap Cleaner. It is easy to use, updates frequently, and cleans your temporary files and registry. It also includes an Add/Remove programs and startup program removal.
    • Advanced WindowsCare Personal removes spyware and adware, immunizes your computer, cleans the registry, optimizes your system, optimizes startup, erases private information, and removes temporary files.


  • There are extensions for Firefox that make it even safer. NoScript blocks Java, Javascript, and other unsafe things on webpages that can cause harm to your computer. If you see any problems, with just two clicks you can either temporarily allow or permanently allow a website to run scripts. Another extension, SiteAdvisor, checks ratings off McAffee’s SiteAdvisor website to make sure that websites you visit are safe. An alternative is to just look up unsafe websites at their website manually, as the extension can increase web page loading time by a few seconds.
  • Running many programs at the same time can slow down your computer. Make sure to only run one main virus scanner and one firewall (disable the Windows Firewall) and defragment and clean your hard drive often.

Things You’ll Need

  • A computer (article directed towards Windows XP)
  • Money (optional)
  • A good amount of RAM
  • An Internet connection and browser

Related wikiHows

Sources and Citations

Article provided by wikiHow, a wiki how-to manual. Please edit this article and find author credits at the original wikiHow article on How to Choose the Right Anti Malware Software. All content on wikiHow can be shared under a Creative Commons license.