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Windows update can't install definition updates error code 0x800b0109. A certificate chain processed, but terminated in a root certificate which is not trusted by the trust provider.
* Moved from Win 7/updates
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
The error may actually be quite new for being due to the SHA-2 code signing change. Also, when Defender is affected, other more recent updates are, too. The error just may not persist very long after reinstalling because one round of checking for updates will install KB4474419.
Regards, VZ
error code 0x800b0109
Code 0x800b0109 indicates KB4474419 missing.
That did not address the problem at all.
So it is not OK to address code 0x800b0109 in Windows Update because Windows Defender may be a beneficiary?
Bill, you don't want Defender to show error code 0x800b0109 because you don't want anything to show it.
