VS Code Insiders Jupyter extension cannot open Jupyter Notebooks after 1.56 update

Environment data

• VS Code version: Insiders 1.56
• Jupyter Extension version (available under the Extensions sidebar): v2021.6.755784270
• Python Extension version (available under the Extensions sidebar): v2021.4.765268190
• OS (Windows | Mac | Linux distro) and version: Windows 10 Enterprise version 10.0.18363
• Python and/or Anaconda version: Python 3.7.10 conda 4.10.1
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): conda
• Jupyter server running: Local and Remote

Expected behaviour

Jupyter notebooks are opened with no issues

Actual behaviour

Error Message: Cannot open resource with notebook editor type ‘jupyter-notebook’, please check if you have the right extension installed or enabled.

Error Message from Jupyter extension: Extension activation failed, run the ‘Developer: Toggle Developer Tools’ command for more information.

Steps to reproduce:

[NOTE: Self-contained, minimal reproducing code samples are extremely helpful and will expedite addressing your issue]

1. Open VS Code Insiders
2. Open any Jupyter Notebook

Logs

Output for Jupyter in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Jupyter)

User belongs to experiment group 'pythonJediLSP'
User belongs to experiment group 'jupyterTest'
User belongs to experiment group 'pythonDiscoveryModuleWithoutWatcher'
User belongs to experiment group 'jupyterEnhancedDataViewer'
User belongs to experiment group 'NativeNotebookEditor'
Error 2021-04-21 09:55:19: extension activation failed [TypeError: this.notebook.onDidChangeActiveNotebookKernel is not a function
	at new T (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:49:656347)
	at Object.t.resolveInstance (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239967)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239172
	at Array.map (<anonymous>)
	at Object.t.resolveInstance (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239737)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239172
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:238120
	at Array.map (<anonymous>)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:238092
	at Array.map (<anonymous>)
	at Object.t.resolveInstance (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239737)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239172
	at Object.t.resolve (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239435)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:230532
	at e._get (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:230298)
	at e.get (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:229010)
	at a.get (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:49:819305)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:273220
	at processTicksAndRejections (internal/process/task_queues.js:93:5)
	at async c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:32:773548
	at async t.activate (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:32:773235)
	at async Promise.all (index 0)]
Error 2021-04-21 09:55:19: Failed to active the Jupyter Extension [TypeError: this.notebook.onDidChangeActiveNotebookKernel is not a function
	at new T (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:49:656347)
	at Object.t.resolveInstance (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239967)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239172
	at Array.map (<anonymous>)
	at Object.t.resolveInstance (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239737)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239172
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:238120
	at Array.map (<anonymous>)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:238092
	at Array.map (<anonymous>)
	at Object.t.resolveInstance (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239737)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239172
	at Object.t.resolve (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:239435)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:230532
	at e._get (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:230298)
	at e.get (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:229010)
	at a.get (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:49:819305)
	at c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:47:273220
	at processTicksAndRejections (internal/process/task_queues.js:93:5)
	at async c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:32:773548
	at async t.activate (c:\Users\ejseglo\.vscode-insiders\extensions\ms-toolsai.jupyter-2021.6.755784270\out\client\extension.js:32:773235)
	at async Promise.all (index 0)]
Info 2021-04-21 09:55:19: Found existing keyfile at c:\Users\ejseglo\AppData\Roaming\Code - Insiders\User\globalStorage\ms-toolsai.jupyter\nbsecret

[IanMatthewHuff]

I just pushed a new version. The last three digits of the extension should end with 982 to know that you got the most recent version (it can sometimes take a bit longer to show up on the Extension tab). Coming in a bit hot, so we might see some issues here (and widgets will not be working for a bit) just create a new issue to report them, or you can bump on this thread.

[IanMatthewHuff]

Yeah, the recent update made some big changes with how kernels are located and loaded with VS Code Native notebooks. When we push our update this morning there might be some issues with automatic kernel selection and the kernels listed in the selection dropdown. Widget support will probably also be broken for a little bit. We’ll get it fixed up as quick as we can.