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Fix SSH "Permission denied (publickey)"

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Linux & Systems beginner 6 min read $0.01 Updated 2026-10-19

Systematic fix for SSH publickey failures: verbose client output, which identity is offered, correct permissions for ~/.ssh and authorized_keys, key format, ssh-agent, sshd config, home directory ownership and reading auth logs.

SSH refuses your key with "Permission denied (publickey)". Check which key is offered, the file permissions on both sides, the authorized_keys content and the server logs.

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#ssh#linux#authentication#keys#troubleshooting

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