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This is actually multiple possible problems 1) saved credentials do not match current credentials or 2) saved computer does not match current computer or 3) unspecified other permissions issue, but since the VS error message can be the same as well as the solution, we are lumping them together. If its a type 3) situation, please see Solution 4 above.

"Host key verification failed" means that the host key of the remote host was changed. This happens after major changes such as when we reimage our computers every quarter.

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"permission denied" can be either of the above as well as several other errors. e.g. your are using your ECE or UCSBnetID credentials on a CoE computer or vice versa. See Solution 4 above.

• to clear ssh keys, also known as ssh targets, you can remove it on the SSH config file ~/.ssh/config where ~ is your home directory and exact path will vary person to person.
• It is also a good idea to clear the ssh host key/target off ~/.ssh/known_hosts which is the file used by almost every other ssh program.
• (Optional) Some extensions save credentials and need to be cleared as well.

  • On Windows: you can press windows key + r then type %USERPROFILE%\.%EXTENSION_NAME_HERE% where % indicates a variable and EXTENSION_NAME_HERE is your extension


  • On Linux and Mac OS: ~/.EXTENSION_NAME_HERE

  • For Ubuntu/GNOME Visual Studio Code users, the Credential Manager can be accessed by launching the "Passport and Keys" application. You can delete the Visual Studio Code/GitHub entry by clicking "Password", looking for the entry and delete

  • some extensions (no where near a complete list) are ~/.vscode-server for the default server, .sfdx for salesforce, .git or .github or .git-credentials for git/gitlab/github and assorted other repositories

  • In that directory you'll find a json file for each login saved, each one named after your username in that org. That json holds the following properties:

    • username
    • orgId
    • accessToken
    • refreshToken
    • instanceUrl
    • loginUrl
    • clientId

    You can delete the ones you don't need.

• (Optional) Navigate to Code > Preferences > Settings > Workspace > Extensions > your_extension_name_here  to check whether the credentials and the instance URL have been deleted for all extensions
  

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