According to documentation
Configure ArcGIS Web Adaptor—Installation Guides (10.5) | ArcGIS Enterprise
Before proceeding, ensure ArcGIS Web Adaptor is installed on a website running on port 80 or port 443. ArcGIS Web Adaptor cannot be configured with Portal for ArcGIS if it is installed on a website running on a port other than 80 or 443.
but
Configure ArcGIS Web Adaptor—Installation Guides (10.5) | ArcGIS Enterprise
Before proceeding, ensure ArcGIS Web Adaptor is installed on a website running on port 80. ArcGIS Web Adaptor cannot be configured with Portal for ArcGIS if it is installed on a website running on a port other than 80.
which is correct? is it necessary 80 or 443, only 80 o both 80 and 443?
i have a problem i don't know if it is because i have only port 443
Thank you