Hyper-V R2: error ID 14050 with the string ‘Failed to register service principal name"

The other day, at some point my Hyper-V R2 server has returned this error:
Error ID 14050 with the string ‘Failed to register service principal name" ..
After some search with the new bing :) , I found these links:
http://techblog.mirabito.net.au/?p=230
http://www.eggheadcafe.com/software/aspnet/35254089/hypervvmms-failed-to-re.aspx

Unluckily the issue stays , so I think:

De-Join and Re-Join my Virtualization Host in to the Active Directory Domain ...

Well! my auto-tip has worked!  

Enjoy.