During my initial installation of VDP using the local admin account everything worked without a hitch.
Why i reinstalled the appliance was that i initially tried to change the user that authenticates to the VC from the VDP appliance was to use a lesser powerful user account. The VDP stopped working, and i tried to switch back to the original admin account with no luck.
So I reinstalled the appliances using the same dns names for each appliance. Everything is setup and all the checks are a go, but the backup jobs immediately failed everytime.
I feel that there are hooks in the system where something is disassociated from the reinstalled appliances. Maybe somewhere in the Vcenter DB, SSO, etc?
Could someone assist with a step by step clean uninstall of VDP which i hope will resolve the issue,
Clean steps for VDP uninstall
1. Power off & delete the appliance
2. But you'll still see VDP plugin in the UI, So unregister the VDP plugin through the vcenter object browser(MOB)
In your vCenter, open object browser - https://<ip of your vcenter>/mob
Once prompted, provide the vcenter credentails
Click on content
Click on the extensionmanager
You should see some extension with vdp (eg:- com.vmware.vdp) or similar
clcik on unrgisterextension method and enter "com.vmware.vpd" or whatever you see in the above step
click on Invoke method.
You are done !
Restart the web client service and you are all set.
Go to UI and you will not find 'vSphere Data Protection' listed there.
3. Now you start with a fresh install
Well, the official vmware solution to my issue was the following KB.
Thanks Ken and the engineers for the solution
If your symptoms are the following - try the KB