Fix Multipass Client not Authenticated

Describe the bug for MACOS

When trying to use multipass in any way on my MAC, for example:

multipass list

I get the following output:

list failed: The client is not authenticated with the Multipass service.
Please use 'multipass authenticate' before proceeding.

Then trying

multipass authenticate

results in:

Please enter passphrase:
authenticate failed: Passphrase is not set. Please 'multipass set local.passphrase' with a trusted client.

multipass set local.passphrase

results in

Please enter passphrase:
Please re-enter passphrase:
set failed: The client is not authenticated with the Multipasss service.
Please use 'multipass authenticate' before  proceeding.

Solution for macOS

I resolved this issue on macOS by following these steps:

• Open the terminal and switch to the root user with:

  sudo -i

• Manually remove the Multipass folders from /var/root/Application Support/ using (There were 2 in my case):

  cd /var/root/Library/Application\ Support
  rm -rf multipass*

• Manually remove the multipass from /usr/local/caskroom/ using :

   cd /usr/local/caskroom
   rm -rf multipass

• Uninstall Multipass with Homebrew using the --zap option, which removes all related files:

  brew --zap uninstall multipass

• Reinstall Multipass with Homebrew:

  brew install --cask multipass

After following these steps, everything works as expected.