Portal for ArcGIS (The layer, Layer Name, cannot be added to the map) …. error

[abdullahqasrawi]

I am trying to publish a layer to portal for ArcGIS 10.5 by using ArcGIS pro 2.0.0.  portal for ArcGIS 10.5 and ArcGIS server 10.5 are federated, then I found the error (The layer, Layer Name, cannot be added to the map.) Please see the screenshot below.

What might the issue be her?

[abdullahqasrawi]

The same error appears

[PanagiotisPapadopoulos]

Try to configure the Web Adaptor again for the ArcGIS Server.

[PanagiotisPapadopoulos]

Configure ArcGIS Web Adaptor—Installation Guides (10.5) | ArcGIS Enterprise