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Title: Troubleshooting SSH - GitHub Docs

Open Graph Title: Troubleshooting SSH - GitHub Docs

X Title: Troubleshooting SSH - GitHub Docs

Description: When using SSH to connect and authenticate to GitHub, you may need to troubleshoot unexpected issues that may arise.

X Description: When using SSH to connect and authenticate to GitHub, you may need to troubleshoot unexpected issues that may arise.

Opengraph URL: https://docs-internal.github.com/en/authentication/troubleshooting-ssh

direct link

Domain: docs.github.com

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Links:

Skip to main contenthttps://docs.github.com/en/authentication/troubleshooting-ssh#main-content
Skip to contenthttps://docs.github.com/en/authentication/troubleshooting-ssh#main-content
https://docs.github.com/en
GitHub Docshttps://docs.github.com/en
Homehttps://docs.github.com/en
Authenticationhttps://docs.github.com/en/authentication
Authenticationhttps://docs.github.com/en/authentication
https://docs.github.com/en/authentication/troubleshooting-ssh
Authentication to GitHubhttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/about-authentication-to-github
Create a strong passwordhttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/creating-a-strong-password
Switching between accountshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/switching-between-accounts
Verifying devices on sign inhttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/verifying-new-devices-when-signing-in
Update access credentialshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/updating-your-github-access-credentials
Manage personal access tokenshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens
Reviewing your SSH keyshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/reviewing-your-ssh-keys
Deploy keyshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/reviewing-your-deploy-keys
Token expirationhttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/token-expiration-and-revocation
Revoke your credentialshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/revoking-your-credentials
Review security loghttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/reviewing-your-security-log
Security log eventshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/security-log-events
Remove sensitive datahttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/removing-sensitive-data-from-a-repository
About anonymized URLshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/about-anonymized-urls
GitHub's IP addresseshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/about-githubs-ip-addresses
SSH key fingerprintshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/githubs-ssh-key-fingerprints
Sudo modehttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/sudo-mode
Unauthorized accesshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/preventing-unauthorized-access
Viewing and managing sessionshttps://docs.github.com/en/authentication/keeping-your-account-and-data-secure/viewing-and-managing-your-sessions
About 2FAhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/about-two-factor-authentication
About mandatory 2FAhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/about-mandatory-two-factor-authentication
Configure 2FAhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/configuring-two-factor-authentication
Configure 2FA recoveryhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/configuring-two-factor-authentication-recovery-methods
Access GitHub with 2FAhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/accessing-github-using-two-factor-authentication
Countries supporting SMShttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/countries-where-sms-authentication-is-supported
Change 2FA methodhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/changing-your-two-factor-authentication-method
Troubleshooting 2FAhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/troubleshooting-two-factor-authentication-issues
Recover an account with 2FAhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/recovering-your-account-if-you-lose-your-2fa-credentials
Disable 2FAhttps://docs.github.com/en/authentication/securing-your-account-with-two-factor-authentication-2fa/disabling-two-factor-authentication-for-your-personal-account
About passkeyshttps://docs.github.com/en/authentication/authenticating-with-a-passkey/about-passkeys
Manage your passkeyshttps://docs.github.com/en/authentication/authenticating-with-a-passkey/managing-your-passkeys
Sign in with a passkeyhttps://docs.github.com/en/authentication/authenticating-with-a-passkey/signing-in-with-a-passkey
About SSHhttps://docs.github.com/en/authentication/connecting-to-github-with-ssh/about-ssh
Check for existing SSH keyhttps://docs.github.com/en/authentication/connecting-to-github-with-ssh/checking-for-existing-ssh-keys
Generate new SSH keyhttps://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent
Add a new SSH keyhttps://docs.github.com/en/authentication/connecting-to-github-with-ssh/adding-a-new-ssh-key-to-your-github-account
Test your SSH connectionhttps://docs.github.com/en/authentication/connecting-to-github-with-ssh/testing-your-ssh-connection
SSH key passphraseshttps://docs.github.com/en/authentication/connecting-to-github-with-ssh/working-with-ssh-key-passphrases
SSH agent forwardinghttps://docs.github.com/en/authentication/connecting-to-github-with-ssh/using-ssh-agent-forwarding
Managing deploy keyshttps://docs.github.com/en/authentication/connecting-to-github-with-ssh/managing-deploy-keys
Use SSH over HTTPS porthttps://docs.github.com/en/authentication/troubleshooting-ssh/using-ssh-over-the-https-port
Recover SSH key passphrasehttps://docs.github.com/en/authentication/troubleshooting-ssh/recovering-your-ssh-key-passphrase
Deleted or missing SSH keyshttps://docs.github.com/en/authentication/troubleshooting-ssh/deleted-or-missing-ssh-keys
Error: Host key verification failedhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-host-key-verification-failed
Permission denied (publickey)https://docs.github.com/en/authentication/troubleshooting-ssh/error-permission-denied-publickey
Error: Bad file numberhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-bad-file-number
Error: Key already in usehttps://docs.github.com/en/authentication/troubleshooting-ssh/error-key-already-in-use
Permission denied other-userhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-permission-to-userrepo-denied-to-other-user
Permission denied other-repohttps://docs.github.com/en/authentication/troubleshooting-ssh/error-permission-to-userrepo-denied-to-userother-repo
Agent failure to signhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-agent-admitted-failure-to-sign
ssh-add "illegal option" errorhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-ssh-add-illegal-option----apple-use-keychain
SSL certificate problemhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-ssl-certificate-problem-verify-that-the-ca-cert-is-ok
Error: Unknown key typehttps://docs.github.com/en/authentication/troubleshooting-ssh/error-unknown-key-type
SSH key audithttps://docs.github.com/en/authentication/troubleshooting-ssh/error-were-doing-an-ssh-key-audit
Commit signature verificationhttps://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification
Existing GPG keyshttps://docs.github.com/en/authentication/managing-commit-signature-verification/checking-for-existing-gpg-keys
Generating a new GPG keyhttps://docs.github.com/en/authentication/managing-commit-signature-verification/generating-a-new-gpg-key
Add a GPG keyhttps://docs.github.com/en/authentication/managing-commit-signature-verification/adding-a-gpg-key-to-your-github-account
Tell Git about your signing keyhttps://docs.github.com/en/authentication/managing-commit-signature-verification/telling-git-about-your-signing-key
Associate email with GPG keyhttps://docs.github.com/en/authentication/managing-commit-signature-verification/associating-an-email-with-your-gpg-key
Signing commitshttps://docs.github.com/en/authentication/managing-commit-signature-verification/signing-commits
Signing tagshttps://docs.github.com/en/authentication/managing-commit-signature-verification/signing-tags
Displaying verification for all commitshttps://docs.github.com/en/authentication/managing-commit-signature-verification/displaying-verification-statuses-for-all-of-your-commits
Check verification statushttps://docs.github.com/en/authentication/troubleshooting-commit-signature-verification/checking-your-commit-and-tag-signature-verification-status
Use verified email in GPG keyhttps://docs.github.com/en/authentication/troubleshooting-commit-signature-verification/using-a-verified-email-address-in-your-gpg-key
Using SSH over the HTTPS porthttps://docs.github.com/en/authentication/troubleshooting-ssh/using-ssh-over-the-https-port
HTTPS cloning with credential cachinghttps://docs.github.com/en/github/getting-started-with-github/caching-your-github-credentials-in-git
Recovering your SSH key passphrasehttps://docs.github.com/en/authentication/troubleshooting-ssh/recovering-your-ssh-key-passphrase
Deleted or missing SSH keyshttps://docs.github.com/en/authentication/troubleshooting-ssh/deleted-or-missing-ssh-keys
Error: Host key verification failedhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-host-key-verification-failed
Error: Permission denied (publickey)https://docs.github.com/en/authentication/troubleshooting-ssh/error-permission-denied-publickey
Error: Bad file numberhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-bad-file-number
Error: Key already in usehttps://docs.github.com/en/authentication/troubleshooting-ssh/error-key-already-in-use
add a keyhttps://docs.github.com/en/articles/adding-a-new-ssh-key-to-your-github-account
Error: Permission to user/repo denied to other-userhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-permission-to-userrepo-denied-to-other-user
Error: Permission to user/repo denied to user/other-repohttps://docs.github.com/en/authentication/troubleshooting-ssh/error-permission-to-userrepo-denied-to-userother-repo
Error: Agent admitted failure to signhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-agent-admitted-failure-to-sign
Error: ssh-add: illegal option -- apple-use-keychainhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-ssh-add-illegal-option----apple-use-keychain
Error: SSL certificate problem, verify that the CA cert is OKhttps://docs.github.com/en/authentication/troubleshooting-ssh/error-ssl-certificate-problem-verify-that-the-ca-cert-is-ok
Error: Unknown key typehttps://docs.github.com/en/authentication/troubleshooting-ssh/error-unknown-key-type
Error: We're doing an SSH key audithttps://docs.github.com/en/authentication/troubleshooting-ssh/error-were-doing-an-ssh-key-audit
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Make a contributionhttps://github.com/github/docs/blob/main/content/authentication/troubleshooting-ssh/index.md
Ask the GitHub communityhttps://github.com/orgs/community/discussions
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