Check the Certification Manager
If the Get URL is not working for the Certification Manager, then ensure that you have the following entry under the <Applications> tag at the location[InstallPath]\PDSService\Config\ApplicationConfiguration.xml . Else add it manually.
<Applicationname="CertificationManager" Platform.PDSComponents.PDSServicePlugin.
displayname="CertificationManager"assemblyName="PDSServicePlugin"className="Approva.CertificationManager.
PDSServiceTasks"assemblypath="\Platform\bin"\></Application>