Windows 10: Update Defender definitions when it isn't the main antivirus?

I installed MalwareBytes, and Windows Defender still has a switch lets it check for malware occassionally. I can also use the latter as an additional check of individual files on demand details at https://superuser.com/a/1533024/767015.

However, it isn't clear how to update Defender's virus definitions. Can anyone please explain how? I'm on Windows 10.

Thanks.

:)

 

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.

 

Windows Defender Antivirus Definitions not updating

An automatic code was generated:

Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.269.444.0) - Error 0x80070643

Windows Defender Antivirus not updating successfully.

 

Printer isn´t working after latest update.

After the latest update from Windows, my Canon Pixma ip6600 printer isnt working. In Device Manager it shows up as working properly but when I go to print it isn´t listed as an option in any programs. Troubleshoot suggests it´s a USB 2 printer on a USB
3 port and that that´s the problem but that cant be since it worked fine before the update. I´ve tried to uninstall and plug it back in but that doesn´t work either.