Hi,
Yes you only want one major antivirus running as they can interfere with each other and
cause strange issues while lowering your security. Uninstall all except one. Constant Guard
is provided by Xfinity/Comcast and add services other than antivirus. And Xfinity/Comcast
also offers Norton and other services for free.
So keep Constant Guard if you wish and use Norton or any one antivirus.
Constant Guard
http://constantguard.comcast.net/
If you do need to uninstall an antivirus do so and then run its maker's removal tool to
prevent trouble causing remnants.
List of anti-malware program cleanup/uninstall tools
Uninstallers (removal tools) for common antivirus software
http://kb.eset.com/esetkb/index?page=content&id=SOLN146
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Windows 8/8.1 includes an automatically loaded updated version of Windows Defender
which is a full antivirus based on Microsoft Security Essentials. (Windows Defender for
XP, Vista, and Windows 7 was only antispyware.)
Windows Defender and Windows SmartScreen fight viruses and other malware
http://windows.microsoft.com/en-US/windows-8/windows-defender#1TC=t1
How to Create a "Windows Defender" Shortcut in Windows 8
http://www.eightforums.com/tutorials/6862-windows-defender-create-shortcut-windows-8-a.html
How to Add a "Windows Defender" Cascading Desktop Context Menu in Windows 8
How to Add "Scan with Windows Defender" for Files and Folders in Windows 8
http://www.eightforums.com/tutorials/15790-scan-windows-defender-add-windows-8-a.html
Windows Defender will automatically scan once per day. Run Windows Defender to see the
last date and time as well as the type - Quick, Full, or Custom. The Quick Scan will be used
for the once per day scan by default.
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You can Search for Defender - Win Key + W
Windows Defender - in the Settings tab - Real Time Protection - check or uncheck (as desired)
Turn on : Administrator - check or uncheck (as desired) Turn on Windows Defender.
Hope this helps.
Rob Brown - Microsoft MVP <- profile - Windows Expert - Consumer : Bicycle <- Mark Twain said it right!