New Post: Updates on Client computer fail with Error Code 800B0109

Hello VinodReddy,

The most important lines are :

2013-07-17 12:52:44:238 1068 648 Misc Validating signature for C:\Windows\SoftwareDistribution\Download\b8104bb6424488e05fdc5ef9f7b8657b\93becf169094e894066c35dabd0f829be56fd337:
2013-07-17 12:52:44:379 1068 648 Misc Microsoft signed: No
2013-07-17 12:52:44:379 1068 648 Misc WARNING: Digital Signatures on file C:\Windows\SoftwareDistribution\Download\b8104bb6424488e05fdc5ef9f7b8657b\93becf169094e894066c35dabd0f829be56fd337 are not trusted: Error 0x800b0109

Please verify :

• Certificate is in right certificate stores.
• Certificate is in Computer (this computer) profile store.
• You have enable TrustedPublisherCertificate : HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AcceptTrustedPublisherCerts = 1
• You have restart the computer after imorting the certificate.
  

Try to copy the file from : http://wsusserver/Content/37/93BECF169094E894066C35DABD0F829BE56FD337.cab
to your local disk. Check properties, especially "Numeric signature" tab, select the certificate and clic on 'Detail'.