Add Windows troubleshooting for SSH agent conflicts.

[BlackDoubleB]

Add guidance for resolving passphrase prompts caused by Git for Windows using a different SSH client than the Windows ssh-agent.

Why

Users on Windows may configure ssh-agent in PowerShell but still be prompted for a passphrase when using Git operations. This can happen when Git for Windows uses its bundled SSH client, which cannot access the Windows ssh-agent service.

What's being changed

• Add a Windows TIP explaining the Git for Windows vs Windows OpenSSH mismatch.
• Include a command to configure Git to use the Windows system OpenSSH client:
  • git config --global core.sshCommand "C:/Windows/System32/OpenSSH/ssh.exe"

Check off the following

• I have reviewed the technical accuracy of the content in this PR.

[welcome]

Thanks for opening this pull request! A GitHub docs team member should be by to give feedback soon. In the meantime, please check out the contributing guidelines.

[github-actions]

How to review these changes 👓

Thank you for your contribution. To review these changes, choose one of the following options:

• Spin up a codespace
• Set up a local development environment

A Hubber will need to deploy your changes internally to review.

Table of review links

Note: Please update the URL for your staging server or codespace.

The table shows the files in the content directory that were changed in this pull request. This helps you review your changes on a staging server. Changes to the data directory are not included in this table.

Source	Review	Production	What Changed
authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent.md	fpt ghec ghes@ 3.19 3.18 3.17 3.16 3.15 3.14	fpt ghec ghes@ 3.19 3.18 3.17 3.16 3.15 3.14

Key: fpt: Free, Pro, Team; ghec: GitHub Enterprise Cloud; ghes: GitHub Enterprise Server

🤖 This comment is automatically generated.

[Sharra-writes]

@BlackDoubleB Thanks for opening a PR! Let me check with the rest of the team about this and see what they think.

[Sharra-writes]

@BlackDoubleB Theoretically this is something we would accept, but because it contains a code snippet in a code security article, it's going to needs lots of approvals, and it's probably going to take quite a while. I'm going to start looking for the people whose approvals I'll need, but I'm just giving you a heads up that this one is going to be complicated on our end.

[github-actions]

Thanks for opening a pull request! We've triaged this issue for technical review by a subject matter expert 👀

[Sharra-writes]

@BlackDoubleB I got lucky and found exactly the person I needed to talk to first try! 🎉 They gave approval, I just need to reformat this to fit our style guide and it should be good to go.

[github-actions]

Thanks very much for contributing! Your pull request has been merged 🎉 You should see your changes appear on the site in approximately 24 hours. If you're looking for your next contribution, check out our help wanted issues ⚡