Connection Error in Jupyter Notebook for Azure Data Explorer (Kusto)

[asilverman]

Type: Bug

Description:
When attempting to establish a connection to the Azure Data Explorer cluster (s360prodro.kusto.windows.net) through a Jupyter Notebook in Azure Data Studio, the following error occurs:
"Object reference not set to an instance of an object."

This issue prevents the connection from being established and blocks further querying of the specified database (service360db).

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Steps to Reproduce:

1. Open a Jupyter Notebook in Azure Data Studio.
2. Set up the connection with the following details:
   • Connection Type: Azure Data Explorer (Kusto)
   • Cluster: https://s360prodro.kusto.windows.net
   • Authentication Type: Azure Active Directory - Universal with MFA support
   • Database: service360db
3. Click Connect.
4. Observe the error: "Object reference not set to an instance of an object."

Expected Behavior:

The connection to the Azure Data Explorer cluster should be established successfully, allowing the notebook to run queries on the specified database.

Additional Context:

• The issue occurs consistently when trying to connect to the Azure Data Explorer cluster via a Jupyter Notebook in Azure Data Studio.
• The cluster and database connection work correctly when accessed via other tools, such as Kusto Explorer.
• Ensuring correct Azure Active Directory authentication details (Universal with MFA support) does not resolve the issue.

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Azure Data Studio version: azuredatastudio 1.50.0 (49c73a8, 2024-11-17T22:41:05.327Z)
OS version: Windows_NT x64 10.0.26100
Restricted Mode: No
Preview Features: Enabled
Modes:

System Info

Item	Value
CPUs	AMD EPYC 7763 64-Core Processor (16 x 2445)
GPU Status	2d_canvas: unavailable_software canvas_oop_rasterization: disabled_off direct_rendering_display_compositor: disabled_off_ok gpu_compositing: disabled_software multiple_raster_threads: enabled_on opengl: disabled_off rasterization: disabled_software raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: disabled_software video_encode: disabled_software vulkan: disabled_off webgl: unavailable_software webgl2: unavailable_software webgpu: unavailable_software webnn: disabled_off
Load (avg)	undefined
Memory (System)	63.95GB (39.87GB free)
Process Argv
Screen Reader	no
VM	0%

Extensions (2)

Extension	Author (truncated)	Version
copilot	Git	1.242.0
kusto	Mic	0.5.8