03-09-2021 09:47:25.497 WUAHandler 12204 (0x2fac) OnSearchComplete - Failed to end search job. Error = 0x800b0109.

03-09-2021 09:47:25.497 WUAHandler 12204 (0x2fac) Scan failed with error = 0x800b0109.

when we decode the error state it as:- A certificate chain processed but terminated in a root certificate which is not trusted by the trust provider.

Solution:- We need to import the Intermediate certificate into Trusted Root Certification Authorities (Certlm.msc ---> Trusted Root Certification Authorities --> Certificate)

Run the action from the configuration manager applet & check the WUA handler.log and scan will be completed successfully.