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Windows 7: Windows Defender Updates Question

27 Oct 2018   #1

Windows 7 Home Premium 64bit SP1
Windows Defender Updates Question

Hello all there! Ive been using windows defender for around three years. All that time i remember it was updating sparingly. Then i noticed the last 2 - 3 months there is a new definitions update every single day which "costs" at least 10MB (sometimes up to 30MB) of hard disk space! It sums like at least half a Gig already... that will be 4GB/year! Whats going on with those definitions?? So much bad stuff for win7? Is that normal?

My System SpecsSystem Spec
01 Nov 2018   #2
Paul Black

7 HP SP1 64-bit Vista HB SP2 32-bit Linux Mint 18.3

Hi Litsman3d,

Welcome to SevenForums!

Windows Defender is only an anti-spyware solution in Windows 7. It didn't became an AV program until Windows 8 when Microsoft embedded it with the OS and enabled it by default for all users.

Have you got an AV installed?

I hope this helps!
My System SpecsSystem Spec
03 Nov 2018   #3

Windows 7 Home Premium 64bit SP1

Thanks for your reply! Im really sorry, my mistake... I mean Microsoft Security Essentials. So whats up with those big daily updates?
My System SpecsSystem Spec

20 Nov 2018   #4

Windows 10 64 Bit

This update is on-going updates from Microsoft Windows Defender.

If you want to stop or disable those update then follow this guide How to permanently disable Windows Defender on Windows 10 | Windows Central
My System SpecsSystem Spec
26 Nov 2018   #5

Windows 7 Ultimate x64

It's not rare at all to see big and quite frequent updates in many antiviruses programs, be it MSE or whatever else.
Every time a new malware is found, a new definition is created and shipped though the virus database updates. As viruses are created by the thousands per day, it's understandable how those updates add up pretty quickly. That's an inevitable consequence of using an antivirus, the neverending stream of updates to its databases, which is required to prevent being a completely useless thing.
The pace is something variable too. Some times you'll see many new definitions added, others a few ones. It all depends how much things the security "experts" discover and catalogate new infections.

Basically updating an antivirus is an arms race: a new virus is discovered, a new definition is created and shipped to all users, and so on. As you can see, the antivirus vendor ALWAYS will be the losing side. How fast do they appear and how fast the AVs adapt depends on the situation.
But I'll say that what you're seeing is pretty much the standard, give or take.

If you're worried about such updates, it could be one more reason to begin thinking about real security and fnially ditch antiviruses, though.
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