Hello,
Thank you for posting in Q&A forum.
Please refer to the discussion in the GitHub community :The conversation keeps showing 'thinking...' and no reply for a long time. · Issue #205 · microsoft/vscode-copilot-release · GitHub
This may be an inherent problem, maybe waiting for a while or reopening the conversation will work.
Also make sure the following requirements are met:
1.Make sure you are on the latest version of Visual Studio Code (run Code: Check for Updates).
2.Make sure you have the latest version of both the GitHub Copilot and GitHub Copilot Chat extensions.
3.Your GitHub account that is signed into VS Code must have an active Copilot subscription. Check your Copilot subscription.
The problem may be automatically fixed after updating.
Please refer to the link: GitHub Copilot frequently asked questions (visualstudio.com)
I hope the information above is helpful.
Best Regards,
Yanhong Liu
============================================
If the Answer is helpful, please click "Accept Answer" and upvote it.