I am using ArcMap 10.3.1 and trying to make a connection with federated ArcGIS Server 10.6.1.
I am Getting this error message:
We were unable to connect to:
http://arcgisserver:6443/arcgis
. Error :
Bad syntax in request. (status code 400)
What could the problem be?
Best Answer
From the ArcGIS manual About Connecting to ArcGIS Server in ArcGIS for Desktop:
It is worth also to read the Compatibility of ArcGIS for server with earlier versions