Error during sign-in: fetch failed - Github Enterprise

[markman123]

Describe the bug

When attempting to login to a GHE (Github Enterprise) instance, it fails with Error during sign-in: fetch failed.

Detailed logs suggest it is attempting to use gh CLI, so I installed that and successfully completed its auth path.

Affected version

0.0.365

Steps to reproduce the behavior

1. Open copilot
2. Run /login
3. Select 2. GitHub Enterprise Cloud with data residency (*.ghe.com)
4. Input ghe domain and hit enter

Expected behavior

Successful login, using proxy information after patch applied in response to #41

Additional context

Before installing gh

2025-12-03T03:00:24.307Z [INFO] Starting Copilot CLI: 0.0.365
Commit: 76d0881
2025-12-03T03:00:24.307Z [INFO] Node.js version: v22.15.0
2025-12-03T03:00:24.603Z [INFO] Login status unknown
2025-12-03T03:00:24.927Z [ERROR] Error checking for updates: TypeError: Cannot read properties of undefined (reading 'paths')
2025-12-03T03:00:24.935Z [START-GROUP] gh auth token --hostname github.com
2025-12-03T03:00:24.937Z [ERROR] Error: spawn gh ENOENT
2025-12-03T03:00:24.937Z [END-GROUP]

Log output after installing ghe (note it's still using github.com and not ghe)

2025-12-03T03:30:45.498Z [INFO] Starting Copilot CLI: 0.0.365
Commit: 76d0881
2025-12-03T03:30:45.499Z [INFO] Node.js version: v22.15.0
2025-12-03T03:30:45.789Z [INFO] Login status unknown
2025-12-03T03:30:46.099Z [ERROR] Error checking for updates: TypeError: Cannot read properties of undefined (reading 'paths')
2025-12-03T03:30:46.105Z [START-GROUP] gh auth token --hostname github.com
2025-12-03T03:30:46.112Z [START-GROUP] gh auth token --hostname github.com
2025-12-03T03:30:46.127Z [START-GROUP] gh auth token --hostname github.com
2025-12-03T03:30:46.197Z [ERROR] no oauth token found for github.com

2025-12-03T03:30:46.197Z [END-GROUP] 
2025-12-03T03:30:46.197Z [DEBUG] Failed to retrieve GitHub token from CLI (exit code: 1): no oauth token found for github.com
2025-12-03T03:30:46.197Z [ERROR] no oauth token found for github.com

2025-12-03T03:30:46.198Z [END-GROUP] 
2025-12-03T03:30:46.198Z [DEBUG] Failed to retrieve GitHub token from CLI (exit code: 1): no oauth token found for github.com
2025-12-03T03:30:46.198Z [DEBUG] No auth info available, skipping custom agents load
2025-12-03T03:30:46.204Z [INFO] Logged out
2025-12-03T03:30:46.214Z [ERROR] no oauth token found for github.com

[andyfeller]

Thank you for opening this issue and apologies for the frustration, @markman123 🙇

The GitHub Copilot CLI can use existing gh authenticated sessions, however you're absolutely correct that /login should just work for ghe.com enterprise instances. For now, I'd like to focus on seeing what problem you're running into there before turning to gh.

Demo

In the following demo, you can see me authenticating to my own ghe.com instance using /login slash command:

Screenshare.-.2025-12-03.9_27_13.AM.mp4

I understand if you might be hesitant sharing that information here, but I'd like to understand copilot responds with after you provide your ghe.com instance.

[markman123]

Starting with copilot --log-level=all

Goes straight to:

Resulting log file:

2025-12-09T00:05:17.471Z [INFO] Starting Copilot CLI: 0.0.365
Commit: 76d0881
2025-12-09T00:05:17.471Z [INFO] Node.js version: v22.15.0
2025-12-09T00:05:17.783Z [INFO] Login status unknown
2025-12-09T00:05:18.099Z [ERROR] Error checking for updates: TypeError: Cannot read properties of undefined (reading 'paths')
2025-12-09T00:05:18.103Z [START-GROUP] gh auth token --hostname github.com
2025-12-09T00:05:18.111Z [START-GROUP] gh auth token --hostname github.com
2025-12-09T00:05:18.130Z [START-GROUP] gh auth token --hostname github.com
2025-12-09T00:05:18.192Z [ERROR] no oauth token found for github.com

2025-12-09T00:05:18.192Z [END-GROUP] 
2025-12-09T00:05:18.192Z [DEBUG] Failed to retrieve GitHub token from CLI (exit code: 1): no oauth token found for github.com
2025-12-09T00:05:18.192Z [ERROR] no oauth token found for github.com

2025-12-09T00:05:18.192Z [END-GROUP] 
2025-12-09T00:05:18.192Z [DEBUG] Failed to retrieve GitHub token from CLI (exit code: 1): no oauth token found for github.com
2025-12-09T00:05:18.192Z [DEBUG] No auth info available, skipping custom agents load
2025-12-09T00:05:18.209Z [INFO] Logged out
2025-12-09T00:05:18.215Z [ERROR] no oauth token found for github.com

2025-12-09T00:05:18.215Z [END-GROUP] 
2025-12-09T00:05:18.215Z [DEBUG] Failed to retrieve GitHub token from CLI (exit code: 1): no oauth token found for github.com

[markman123]

Upgrading Node fixed the issue; will close