CRM Setup Error : Object reference not set to an instance of an object

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If you get generic errors like this, you can find details in logs.

Log path : C:\Users\crmadminuser\AppData\Roaming\Microsoft\MSCRM\Logs\crmserversetup.txt

WebsiteBindingsValidator : Failure: Object reference not set to an instance of an object.

1. Check web site on IIS
2. Add new Web site for CRM
3. Or select default web site from crm setup wizard.