Error category
Fix GitHub Copilot authentication, quota, chat, editor integration, certificate, and agent editing failures in developer workflows.
This GitHub Copilot troubleshooting hub collects real error signatures, quick fixes, common causes, and step-by-step debugging paths for developers who need a practical answer instead of a broad overview.
34 articles in this category.
Start by matching the exact error message, then check the technology, environment, credentials, network path, and deployment context. The pages below are grouped so you can move from broad GitHub Copilot symptoms to specific root-cause families without relying on client-side search.
Resolve unexpected GitHub Copilot rate limit message even when user has active PRO subscription Includes evidence for GitHub Copilot troubleshooting demand.
Oops, you reached the rate limit. Please try again later. Fix GitHub Copilot CLI authentication failure where no credentials are detected in any checked location Includes evidence for GitHub Copilot troubleshooting demand.
Error: No authentication information found Fix GitHub Copilot 'forbidden' error that interrupts sessions mid-use; requires re-authentication or license renewal without restarting the IDE Includes evidence for GitHub Copilot troubleshooting demand.
Forbidden: Access to this endpoint is forbidden — occurs after 2-3 messages using Sonnet 4.5 or other models Fix GitHub Copilot rate limit exceeded error blocking AI code suggestions Includes evidence for GitHub Copilot troubleshooting demand.
GitHub Copilot: Rate limit exceeded. Please wait a short period before retrying your request or upgrade to Copilot Pro for higher limits. Fix GitHub Copilot authentication failure with HTTP 200 response origin error on macOS Includes evidence for GitHub Copilot troubleshooting demand.
ProxiedResponseError [FetchResponseError]: HTTP 200 response does not appear to originate from GitHub. Is a proxy or firewall intercepting this request? Fix GitHub Actions workflow failing because the Copilot engine cannot authenticate Includes evidence for GitHub Copilot troubleshooting demand.
The `copilot` engine terminated before producing output. Error details: No authentication information found. fix GitHub Copilot MCP tools currently disabled by user error Includes evidence for GitHub Copilot troubleshooting demand.
MCP tools fail with 'currently disabled by the user' error in GitHub Copilot fix Copilot Chat responseBody.getReader is not a function error Includes evidence for GitHub Copilot troubleshooting demand.
responseBody.getReader is not a function: TypeError in VS Code Copilot Chat model provider extension Fix GitHub Copilot Chat AbortError operation aborted in VS Code Includes evidence for GitHub Copilot troubleshooting demand.
AbortError: This operation was aborted [GitHub.copilot-chat] Fix GitHub Copilot CLI native addon not found error on Windows ARM64 devices Includes evidence for GitHub Copilot CLI troubleshooting demand.
Native addon "runtime" not found on Windows ARM64 — Copilot CLI v1.0.48-0 ships x64 binary instead of ARM64 Fix VS Code Copilot Chat not listing local Ollama models in the model picker Includes evidence for GitHub Copilot + Ollama troubleshooting demand.
VS Code Copilot Chat does not show local Ollama models in selection menu despite detection in Language Models tab Fix VS Code Copilot Chat auto mode failing because no model endpoint is available Includes evidence for GitHub Copilot troubleshooting demand.
chatagenterror-Auto mode failed: no available model found in known endpoints. Fix VS Code Copilot Chat error when no auto mode endpoints are configured Includes evidence for GitHub Copilot troubleshooting demand.
chatagenterror-No auto mode endpoints provided. Fix VS Code Copilot CLI session failing with unexpected generated prompt structure error Includes evidence for GitHub Copilot troubleshooting demand.
chatagenterror-[CopilotCLISession] Unexpected generated prompt structure. Fix AWS Bedrock model appearing in VS Code Language Models but not selectable in Copilot chat dropdown Includes evidence for GitHub Copilot troubleshooting demand.
AWS Bedrock model shows in Language Models UI but not in Copilot chat picker Fix GitHub Copilot authentication that fails across all editors on a macOS machine Includes evidence for GitHub Copilot troubleshooting demand.
GitHub Copilot authentication fails across multiple editors on macOS Resolve GitHub Copilot ProxiedResponseError that appears after upgrading npx via Homebrew Includes evidence for GitHub Copilot troubleshooting demand.
ProxiedResponseError [FetchResponseError]: HTTP 200 response does not appear to originate from GitHub Fix GitHub Copilot chat not working in IntelliJ IDEA after sending a message Includes evidence for GitHub Copilot troubleshooting demand.
GitHub Copilot chat fails to send message in IntelliJ IDEA Fix GitHub Copilot authentication/sign-in failure in VS Code on a Pro account Includes evidence for GitHub Copilot troubleshooting demand.
Failed to sign in to GitHub Copilot in VS Code Fix GitHub Copilot 429 rate limit errors when using Copilot models in Zed editor Agent Panel Includes evidence for GitHub Copilot troubleshooting demand.
Error interacting with language model: Failed to connect to API: 429 Too Many Requests rate limit exceeded Continue through the full static archive for this hub. Every listed page is crawlable and keeps its existing canonical URL.