Error: "Plug-in configuration with Reverse Proxy failed." in the vSphere UI

Products

• VMware vCenter Server

Issue/Introduction

• The vCenter shows the following error in Recent Task:
  
  Error: "Plug-in configuration with Reverse Proxy failed." in the vSphere UI

• Under "Client Plugins" (Administration > Client Plugins)  the status shows as "Failed" and shows the following logging:
  
  
  
  
• VDT Results show SSL Trust Mismatch.

Cause

The reason for the error is due to SSL trust mismatch after a replacement of the machine SSL certificate

Resolution

SSL Trust Anchor Mismatch:

Use lsdoctor with the --trustfix flag to resolve the issue:

Using the 'lsdoctor' Tool

1. Snapshot the vCenter (or power off cold snapshots if in Enhanced linked mode).
   
   
2. Upload the lsdoctor tool to the vCenter.
   
   
3. SSH to the vCenter, change to the directory that lsdoctor was uploaded, and unzip the lsdoctor archive.
   
   
4. Run: python lsdoctor.py --trustfix
   
   
5. After successful completion of the tool, restart services:
   
   service-control --stop --all && service-control --start --all


6.  Alternatively you can use vCert.py option 4 ( Manage SSL trust anchors) to resolve this.

Additional Information

Using the 'lsdoctor' Tool

Using the VCF Diagnostic Tool for vSphere (VDT)

vCert - Scripted vCenter expired certificate replacement