Error: "VMware Cloud Foundation Operations is not reachable. Please check the connection" in vCenter native plugin

Products

• VMware vCenter Server
• VCF Operations

Issue/Introduction

• Accessing the Operations plugin within the vSphere Client environment triggers a connectivity error. This typically occurs in multi-vCenter environments using Enhanced Linked Mode (ELM).users receive the following error message:
  

  "VMware Cloud Foundation Operations is not reachable. Please check the connection."

• This behavior may persist even when using an incognito/private browser window.
  
  
• The plugin works for the first vCenter added but fails for all subsequent vCenters in the list.

Environment

VMware vCenter Server 9.1
VCF Operations 9.1

Cause

When multiple vCenters are in a linked configuration, the plugin may default to sending the vcuuid of the first vCenter in the list within the HTTP header, regardless of which vCenter the user is currently logged into. If the session token is validated against the incorrect vCenter instance, the connection fails with an 'unreachable' or 401 Unauthorized error.

 

Resolution

This is a known limitation of the vCenter native plugin in vCenters with ELM. To access VCF Operations data for a specific vCenter that is failing to load through the plugin:

1. Log in directly to the VCF Operations UI (formerly vROps) via its FQDN or IP address.
   
   
2. Navigate to the Environment or Dashboards tabs to view metrics for the specific vCenter instance.
   
   Note: Enhanced Linked Mode support for this specific plugin workflow is currently deprecated/unsupported. Users should rely on the standalone VCF Operations interface for managing multi-vCenter environments.

Additional Information

Article 441341: For cases where the error is caused by duplicate GUIDs in the vcopsdb database.