Did you look at: Environment variables ?
And which version of Windows do you have?
The output of:
julia> get(ENV, "TERM", "")
"dumb"
should be empty, and not “dumb”.
Someone else wrote:
So remove the TERM system variable from Windows 10 environment variables settings fix this issue without any further updates.
Now, type echo $TERM shown the default value: xterm-256color works for everything…