A server error occured [400] or vCenter Server ‘once upon a time’

After fixing a failed SSD of one of my lab-hosts I had some minor issues with my vCenter. Whenever I logged on into it I received this error.

vCenter error 400

“[400] An error occured while sending an authentication request to the vCenter Single Sign-On server – An error occured when processing the metadate during vCenter Single Sign-On setup – null.”

fair enough I checked the :5480 VAMI of my PSC and vCenter and the vCenter showed me the SSO was not initialized.

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