HTTP Strict Transport Security (HSTS) forces browsers to make secure HTTPS connections with websites.
However, when changing IIS Bindings, and especially after installing the certificate required to use Box as a migration source, you may be denied access to the CloudM Migrate UI with the error
visit cloudmigrator.local right now because the website uses HSTS
CloudM.local needs to be removed from the HSTS list.
In Chrome, browse to chrome://net-internals/#hsts
Reload https://cloudm.local - You may still get a certificate error but you should now be able to bypass this.