Error: POST:/arcgis//auth/token

Error Message

Attempts to register an ArcGIS Server component with ArcGIS Monitor using ArcGIS Monitor Agent fail when running the registration script. The following error message is returned:

Error:   
Error: POST:/arcgis//auth/token

Cause

The error occurs if the server URL is configured incorrectly in the registration script for ArcGIS Monitor Agent. For example, in the case below, an additional slash (/) is added after arcgis in the URL, which is invalid.

https://monitorserver.domain.com:30443/arcgis/

The default URL configuration is:

https://monitorserver.domain.com:30443/arcgis

Solution or Workaround

To resolve the issue, edit the registration script used for ArcGIS Monitor Agent to remove the trailing slash (/) in the server URL.

Use the following command format to register an ArcGIS Server component with ArcGIS Monitor Agent:

<Monitor Agent installation location>\arcgis-monitor-agent.exe admin:system:register --server-url https://monitorserver.domain.com:30443/arcgis --username  --password 

Note:
Port 30443 is the default HTTPS port for ArcGIS Monitor Server.

Refer to ArcGIS Monitor: Register Windows hosts for monitoring for more information on this.