Cannot update windows defender for Windows 7 Ultimate
Cannot update windows defender.
"the program cant install definition updates. error found 0x800b109. a certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider"
on Windows 7 ultimate.
Subscribe to RSS feed
Last updated April 1, 2020
Since the previous (official?) reply wasn't helpful in my case (I use the standard 'Windows Defender' and not 'Windows Defender Offline' on Windows 7), I've managed to solve the problem by installing two updates:
KB4474419 - SHA-2 code signing support update for Windows Server 2008 R2, Windows 7, and Windows Server 2008: September 23,
KB4490628 - Servicing stack update for Windows 7 SP1 and Windows Server 2008 R2 SP1: March 12, 2019
Just wanted to thank you for the succinct and accurate solution.
Installing those two SHA-2 updates did the trick and Security Essentials is happily grabbing definitions again.
The problem is pretty obvious after the fact (like every other problem I guess) since you can clearly see the definitions stop at 10/21/19 and there are certificate failures in Event Viewer after that.
Thanks again for the valuable answer. Got things quickly going and I'm sure I will come across this more in the future.
2 people were helped by this reply
Did this solve your problem?
Sorry this didn't help.
Great! Thanks for marking this as the answer.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.