Unable to edit vSphere HA configuration just after vSphere HA enabled.

Products

• VMware vCenter Server 8.0

Issue/Introduction

• Unable to edit the "Failures and responses" configuration of vSphere HA because it is grayed out. 
• The issue occurs just after vSphere HA enabled.

Environment

VMware vCenter Server 8.0

Resolution

This issue is known in vCenter Server 8.0 GA and 8.0a.
This issue is resolved in vCenter Server 8.0b.

Workaround:
Turn off vSphere HA and turn on vSphere HA again with toggle button.
Then, you could edit vSphere HA configuration.