Software⏱️ 4 min read📅 2026-06-11

How to Fix: "Bad owner or permissions" error using Cygwin's ssh.exe

Fixing Bad owner or permissions error in Cygwin's ssh.exe

Quick Answer: Check file ownership and permissions, run "chmod 600 ~/.ssh/config" to set correct access rights.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. 🚀 How to Resolve This Issue
  3. 🎯 Final Words

The 'Bad owner or permissions' error in Cygwin's ssh.exe is frustrating because it prevents users from connecting to remote servers. This issue typically occurs when the user's home directory has incorrect ownership or permissions, preventing the ssh executable from accessing the configuration file.

Resolving this error can be time-consuming and requires attention to detail, but with the right steps, you can fix the issue and regain access to your remote connections.

⚠️ Common Causes

  • The primary reason for the 'Bad owner or permissions' error is that the user's home directory has incorrect ownership or permissions. This can happen when the user's home directory is not properly set up or if there are conflicting file system settings.
  • An alternative cause of this issue could be a misconfigured SSH server or a network-related problem.

🚀 How to Resolve This Issue

Change Ownership and Permissions

  1. Step 1: Open the Command Prompt as an administrator and navigate to the Cygwin installation directory (usually C:in"); type 'sudo chown -R username:groupname ' to change the ownership of your user directory.
  2. Step 2: Next, run the command 'chmod -R 755 ' to set the correct permissions for your user directory.
  3. Step 3: Finally, restart Cygwin and try running ssh.exe again with the configuration file.
  4. Step 4: Alternatively, you can also use the 'chown' and 'chmod' commands in the Command Prompt to change ownership and permissions individually.
  5. Step 5: To do this, navigate to the Cygwin installation directory (usually C:in"); type 'sudo chown username ' to change the ownership of your configuration file.
  6. Step 6: Next, run the command 'chmod 644 ' to set the correct permissions for your configuration file.
  7. Step 7: Finally, restart Cygwin and try running ssh.exe again with the configuration file.

Reset SSH Server

  1. Step 1: Open the Command Prompt as an administrator and navigate to the Cygwin installation directory (usually C:in"); type 'sudo /usr/sbin/sshd -t' to run the SSH server in diagnostic mode.
  2. Step 2: This will help you identify any issues with your SSH server configuration or permissions.
  3. Step 3: If you find that there are issues with your SSH server, you may need to restart the SSH service or reinstall Cygwin.
  4. Step 4: Note: This method is more advanced and requires a good understanding of SSH server configuration and permissions.

🎯 Final Words

To summarize, the 'Bad owner or permissions' error in Cygwin's ssh.exe can be resolved by changing ownership and permissions or resetting the SSH server. By following these steps, you should be able to regain access to your remote connections and resolve this frustrating issue.

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