aws / aws/aws-toolkit-vscode

Failed to launch Amazon Q language server: Unable to find a compatible version of the Language Server

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bug
Dominant language
TypeScript
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Description

I am getting the below error since the last few updates on amazon q on vscode(windows).

Failed to launch Amazon Q language server: Unable to find a compatible version of the Language Server

if I revert my amazon q to 1.60.0, everything works well. However with the latest version, this error I get. However code suggestions works fine. But not the chat. Chat window just keep loading indefinitely.

## System details (run `AWS: About` and/or `Amazon Q: About`)

- OS:Windows 11
- Visual Studio Code version:1.100.3
- AWS Toolkit version:3.64.0
- Amazon Q version:1.71.0

Log:

2025-06-10 17:15:55.164 [info] AB Testing Cohort Assignments []
2025-06-10 17:15:55.292 [warning] telemetry: invalid Metric: "languageServer_setup" emitted with missing fields: id
2025-06-10 17:15:55.412 [info] initialized 'submitFeedback' command with default feedback id: Amazon Q

Contributor guide

Open the contributing guide

Research direction

No repository files, tests, or entry points are named. Start by reproducing the failure on Windows 11 with VS Code 1.100.3, AWS Toolkit 3.64.0, and Amazon Q 1.71.0, comparing it with Amazon Q 1.60.0 and reviewing the supplied logs. Done means the language server launches and the chat window no longer loads indefinitely.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript, vscode
Domain
developer-experience, tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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