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GitHub Copilot Sign-in Failed after upgrading to the latest 143 pre-release

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#574 1 comment 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Tech stack
macos, swift
Domain
authentication, desktop

Research direction

Start by reproducing the upgrade from Copilot for Xcode 0.43.141 to 0.43.143, then inspect the GitHubCopilot logs under ~/Library/Logs/GitHubCopilot/ and compare the sign-in flow after relaunching Xcode. Done means the existing login remains valid and the failed sign-in alert no longer appears after the upgrade.

Written by the indexing model from the issue text.

Description

Describe the bug

I have to re-login today after upgrading to 143. However, after I login for about 20 minutes, I got an alert as attached. I am confused as I have already login so I chose cancel. Any idea?

Versions

  • Copilot for Xcode: 0.43.143
  • Xcode: 26.0.1
  • macOS: 26.0.1

Steps to reproduce

  1. upgrade from 141 to 143
  2. relaunch Xcode and copilot

Screenshots

Image

Logs

Additional context

Dominant language
Swift
Stars
6.3k
Forks
2k
Avg merge
3d 21h
Merged PRs (30d)
2

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

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