Again, technically, without an anti-virus installed even for a few minutes, you’re somewhat more vulnerable. The second assumption is that you actually don’t do anything else between the uninstall and the install. However, if the other machines on your local network aren’t necessarily trustworthy, (i.e., they’re the kids’ machines, or someone you know has bad surfing habits) then you probably want to have your Windows firewall turned on, if it isn’t already, before you uninstall your old anti-virus. It’s probably enough to be behind a router, which acts as a hardware firewall protecting you from the internet. Technically, without anti-virus for even a few minutes, you’re somewhat more vulnerable to attack or infection. Safety through the transitionįirst, you have to have a firewall in place. However, this statement assumes that you are handling this in the safest possible way. The right approach is to uninstall the old, and then install the new. We also suspected that the problem was causing emails to be lost or incorrectly funneled to spam, or deleted. After that, the computer was slow doing just about anything. Basically, his first anti-virus had expired, and he installed another without removing the first.
I recently saw this on a friend’s computer. Remember that multiple anti-virus programs can, in fact, come into conflict with each other when they’re installed together.
Typically, the answer to your question is “yes” you should uninstall the old anti- virus software before installing the new. However, for Windows 7 and before, what we’re really talking about here is “Microsoft Security Essentials”. That’s the old name for “Windows Defender”, which is what you would use if you were running Windows 8.
A note on product names: for Windows 7 what you’re really talking about is Microsoft Security Essentials.
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