Unable to register the Portal with the Web Adaptor. Please make sure that the Portal is running and that the account specified has administrative priv

[MartinMcCarry]

I have installed ArcGIS Enterprise 11.1 with the ArcGIS Enterprise Builder on a Windows Server 2019. 

Accepted most default options but I set it to install it to my Data drive, E:\Program Files\

I have run into problems after the install with the ArcGIS Enterprise Configuration Wizard

It gets so far then I get this error: 

Unable to register the Portal with the Web Adaptor. Please make sure that the Portal is running and that the account specified has administrative privileges.

I found this url which details the error:
https://support.esri.com/en-us/knowledge-base/error-unable-to-register-the-arcgis-server-with-the-we...

I can open the ArcGIS Server Manager site and the Portal Site and login no problem with the user just created.

Is there anything else which could be tried to solve this issue?

[Ankitkhanna]

Hi @MartinMcCarry it means you ran web adapter installer separately.
As I tried running Enterprise Builder installer, it doesn't give option to repair, it just let's uninstall.

[MartinMcCarry]

Sorry I meant the repair install for the Prerequisities. (Not the adapter.)

[Ankitkhanna]

FYI, for me this issue got resolved by creating fake domain name entry in Hosts file.

The steps i performed:

1. Opened Hosts file in notepad: C:\Windows\System32\drivers\etc\hosts
2. Added the fake domain name entry: 127.0.0.1 enterprisemachine.com.au
3. Saved the file.

Then I uninstalled enterprise builder and performed installation and configuration again, it worked with no issues.