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"Extension host terminated unexpectedly." error caused by Flutter extension

See original GitHub issue

Issue Type: Bug

To reproduce this problem, you need to install Flutter(dart-code.flutter) extension and open an existing Flutter project with Visual Studio Code.

Wait some seconds, you will see a popup notification in the bottom right corner said “Extension host terminated unexpectedly.” with options “Open Developer Tools” and “Restart Extension Host”:

a screenshot of the popup error notification

By the way, this error also exists on Visual Studio Code - Insiders.

Extension version: 3.18.1 VS Code version: Code 1.52.1 (ea3859d4ba2f3e577a159bc91e3074c5d85c0523, 2020-12-16T16:34:46.910Z) OS version: Windows_NT x64 10.0.21296

System Info

Item	Value
CPUs	Intel® Core™ i5-6300HQ CPU @ 2.30GHz (4 x 2304)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: disabled_off opengl: enabled_on protected_video_decode: unavailable_off rasterization: enabled skia_renderer: disabled_off_ok video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	15.89GB (5.32GB free)
Process Argv	–crash-reporter-id 26bd872c-b1c3-4c78-af26-9906b4c1ce99
Screen Reader	no
VM	0%

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pythonvspyt600:30247031

Issue Analytics

State:
Created 3 years ago
Comments:9 (5 by maintainers)

Top GitHub Comments

1reaction

DanTupcommented, Jan 27, 2021

Can you try:

uninstall the Flutter extension
uninstall the Dart extension
Close VS Code
Delete any folders starting with dart-code from %USERPROFILE%\.vscode\extensions
Re-open VS Code and re-install the Flutter extension (which will also install Dart)
See if the issue still occurs

This will eliminate any of the extension code being corrupt, which has happened in the past.

If it still occurs then, try enabling the Dart-Code general extension log which might help understand whether any of the code is bring run at all (and if so, how far it’s getting).

Thanks!

0reactions

DanTupcommented, Jan 27, 2021

Great, glad to hear! It sounds like the extension was somehow corrupt then. I can’t explain why, it’s not something the extension is involved in (VS code downloads and extracts the extension code and the extension never modifies its own code), but at least you got to the bottom of it! 😃