Error 404 when try to configure webadaptor for portal for arcgis

[ScaiConsulting]

After installing ArcGIS Server and Arcgis Portal, I am trying to configure the web adaptor to use it with portal but when I navigate this url: https://localhost/arcgis/webadaptor/portal , I have error 404 or a white page without any message.

Arcgis Server is 10.5

Arcgis Portal is 10.5

Arcgis Web adaptor is 10.5

OS is Windows 10

I am using web adaptor with IIS.

How can I solve this? Is there a bug with the web adaptor?? 

Please help me!!

[RandallWilliams]

Did the hostname binding match one the Subject Alternative Names defined in the cert? If so, I'd get them to log a bug.

[RoyceSimpson]

Removing the host name in the binding setting solved it for me too.

[feralcatcolonist_old]

@BradLingenfelder1  You saved my life. I owe you, what my people call, a life debt.

Also, did you change the binding back after initializing your web adaptor?

[ChristianJohnsonMWPipe]

Can I buy you a cold beverage as a thank you? After going round and round trying different things removing the Hostname worked! 

Thank you so much!!!