New Post: Failed to load the certificate

What is the build from your WSUS? If WSUS is installed on a W2008R2 or lower, pls check the Build.
http://www.wsus.de/images/wsus-version.png

WSUS 3.0 (SP2): Build 3.2.7600.226
WSUS 3.0 (SP2) + KB2720211: Build 3.2.7600.251
WSUS 3.0 (SP2) + KB2734608: Build 3.2.7600.256
WSUS 3.0 (SP2) + KB2828185: Build 3.2.7600.262
WSUS 3.0 (SP2) + KB2938066: Build 3.2.7600.274

The latest Build is .274. If your WSUS Build is lower then install posted updates.