Windows 10: Antivirus definitions

When I go to view installed updates in Windows Update History all my updates install EXCEPT the antivirus definition updates for Windows Defender- KB2267602. It shows Failed to install - 0x8024000b. When I run the troubleshooter it doesn't find any problems. Running Windows 10 version 1803. Use McAfee Live Safe on one of my computers and Avast Internet Security on the other as my active security programs. Both computers have been having this problem for several months now. What is interfering with or preventing the installation of the Windows Defender antivirus definitions and how do I fix this?

:)

 

definition update for windows denfender antivirus


Hi mknic,
I have literally just installed the definition update KB2267602 without any problem. I suggest as a first step checking all the Windows Defender settings to make sure they all have the 'green ticks' in each section.






ps. The only reason the 'Family Options' is not ticked is because I am the only user on my computer.

I also would suggest running the 'Troubleshoot' feature in the Update & Security settings which has a section dealing with update problems.

 

Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.259.206.0) - Error 0x80070643

Hi,

Error 0x80070643 is can be caused by Windows update problem. We suggest that you try
to manually install the definitions. Check this
link for the steps. Please go through the section: Manually download and install the definitions.

Feel free to update with the results.

 

Good Antivirus + Firewall

I would never put anything Norton on my computer.

Nod32 is arguably the best antivirus. AVG is likely not as good, but it's free and at least pretty good.

Firewalls, I'd put Comodo and whatever "Tiny Personal Firewall" is named nowadays on your short list. I think Kerio might have sold it now and it's named something else. Otherwise, just put Comodo on your short list. I think the current version's ease of use has taken a step backwards, seems a bit counter-intuitive when trying to do certain things with it, but overall it does a good job and the price is right.