Hi, Michael >   Are you sure this is a new problem? Yes, previous code snippet using (getenv "PATH") when tramp not involved which is right result, I've tested this by revert this commit. >   I've tried Emacs 26.1 on MS Windows, and I get a similar error. Have you added related path to PATH environment variable, e.g. d:\emacs-26.1-x86_64\bin ? I've download Emacs 26.1 from http://ftp.gnu.org/gnu/emacs/windows/emacs-26/emacs-26.1-x86_64.zip and it shows fine. Best regards,