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Bug

In ArcGIS API for Python, using the overwrite() function in the FeatureLayerCollectionManager module on a secured hosted feature layer published to Portal for ArcGIS using Integrated Windows Authentication (IWA) for authentication returns the error message, "Token Required (499)."

Last Published: October 7, 2020 ArcGIS API for Python
Bug ID Number BUG-000134349
SubmittedOctober 5, 2020
Last ModifiedJune 28, 2025
Applies toArcGIS API for Python
Version found1.8.1
Operating SystemWindows OS
Operating System Version2016 64 Bit
Version Fixed2.0.0
StatusFixed

Workaround

Connect using https://<FQDN>:7443/arcgis and a built-in account to perform the overwrite.

Steps to Reproduce

Bug ID: BUG-000134349

Software:

  • ArcGIS API for Python

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