ERROR

We were unable to connect to <ArcGIS Server URL> Error: Bad syntax in request. (status code 400)

Last Published: June 2, 2022

Error Message

When attempting to make an ArcGIS Server connection in ArcMap, the following error message is returned:

Error:   
We were unable to connect to <ArcGIS Server URL> Error: Bad syntax in request. (status code 400).
The error message when attempting to connect to ArcGIS Server in ArcMap

Cause

The credentials entered are incorrect.

Solution or Workaround

  • For a standalone ArcGIS Server, the credentials are the ArcGIS Server credentials.
  • For a federated ArcGIS Server, the credentials are the Portal for ArcGIS credentials.

Article ID:000027458

Software:
  • ArcGIS Server
  • ArcMap 10 6
  • ArcMap 10 7
  • ArcMap 10 8

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