Unable to upload custom patches to the patch repository of the VUM with error "Failed to upload file"

Products

• VMware vCenter Server

Issue/Introduction

Symptoms:

• Unable to upload custom patches to the patch repository of the VUM with error "Failed to upload file"
• In the vsphere-client virgo logs you see these errors:

     2018-12-09T20:35:13.391-08:00] [ERROR] http-bio-9090-exec-959       70039021 101701 201167 com.vmware.vum.fileupload.impl.VumServerFileUploadClient          VumFileUpload: Exception executing http request -  javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)
    at sun.security.ssl.SSLSocketImpl.recvAlert(SSLSocketImpl.java:2038)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1135)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1385)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1413)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1397)

[2019-06-25T12:51:25.257+02:00] [ERROR] tp-nio-127.0.0.1-5090-exec- com.vmware.vum.client.upload.FileUploadClient  Error while executing HTTP request javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure       at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)       at sun.security.ssl.Alerts.getSSLException(Alerts.java:154)

Environment

VMware vCenter Server Appliance 6.5.x
VMware vCenter Server Appliance 6.0.x

Cause

This issue could occur if the 
This is due to invalid Certificate/Certificate Template used when generating a custom Certificate for vCenter Server.

Resolution

To resolve this problem reissue the certificates used by the vCenter Server following the correct procedure. 

* How to use vSphere 6.x Certificate Manager (2097936)
https://kb.vmware.com/s/article/2097936