VMWare Update Manager sysimage.fault.SSLCertificateError

Recently I’ve gone through the process of replacing the machine_ssl certificates on our vCenter and PSC nodes at work, and shortly after I went to use Update Manager and received the following error: sysimage.fault.SSLCertificateError We opted for the ‘Hybrid’ model of certificates in vSphere 6, where the machine_ssl certificate on the PSC and VC server nodes is replaced with an externally signed certificate, and the VMCA takes care of all of the solution user certificates using the default configuration.