Definition updates for Windows Defender Antivirus (Offline Downloads)

Ink

Administrator
Thread author
Verified
Staff Member
Well-known
Jan 8, 2011
22,361
Get offline definition updates for Windows Defender Antivirus for Windows 10 and 8.1.
Microsoft continually updates security intelligence in antimalware products to cover the latest threats and to constantly tweak detection logic, enhancing the ability of Windows Defender Antivirus and other Microsoft antimalware solutions to accurately identify threats. This security intelligence works directly with cloud-based protection to deliver fast and powerful AI-enhanced, next-generation protection.

Download latest definition updates for Windows Defender Antivirus | Microsoft Security Intelligence


Shared for informational purposes.
 

bjm_

Level 14
Verified
Top Poster
Well-known
May 17, 2015
668
WD engine updates for v1703 and upwards Microsoft Update Catalog
Vasudev link lands on https://www.catalog.update.microsoft.com/ErrorInline.aspx?id=-1914896352

The website has encountered a problem
[Error number: 8DDD0020]

So, here's link that works for me ... https://www.catalog.update.microsoft.com/Home.aspx ...
and Last Updated (5/30/2019)
https://www.catalog.update.microsoft.com/Search.aspx?q=windows%20defender%20antivirus ... looks old, to me.
png_131.png
 
Last edited:

Andrew3000

Level 11
Verified
Top Poster
Malware Hunter
Well-known
Feb 8, 2016
516
link looks broken to me ... link lands on https://www.catalog.update.microsoft.com/ErrorInline.aspx?id=-1914896352
So, here's link that works for me https://www.catalog.update.microsoft.com/Home.aspx
and
https://www.catalog.update.microsoft.com/Search.aspx?q=windows%20defender%20antivirus looks too old (5/30/20190 to be useful.
View attachment 214802

Same here.
 

Vasudev

Level 33
Verified
Nov 8, 2014
2,228
Vasudev link lands on https://www.catalog.update.microsoft.com/ErrorInline.aspx?id=-1914896352

The website has encountered a problem
[Error number: 8DDD0020]

So, here's link that works for me ... https://www.catalog.update.microsoft.com/Home.aspx ...
and Last Updated (5/30/2019)
https://www.catalog.update.microsoft.com/Search.aspx?q=windows%20defender%20antivirus ... looks old, to me.
View attachment 214802
Same here.
Sorry I linked the wrong download link. It seems you need to click Download button and then download all 3 files which are x64,x86 and ARM64.
 

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