The ArcGIS Web Adaptor does not allow registering the same web adaptor with both a Portal for ArcGIS and ArcGIS for Server.
Last Published: February 15, 2016ArcGIS for Server
Bug ID Number
December 15, 2015
April 29, 2020
ArcGIS for Server
The issue is a duplicate of an existing issue. See the issue's Additional Information section for details. Customers associated with the duplicate issue are automatically attached to the open issue.