Windows 10 -> 'npx create-react-app myapp' command does not work because of whitespace username in file path

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if you want to use current path that has space in username "C:\Users\Firstname Lastname\AppData\Roaming\npm-cache" you can replace the string after space with "~1"

npm config set cache "C:\Users\Firstname~1\AppData\Roaming\npm-cache" --global

If you have still troubles with this problem you can try this:

I was able to fix this in Windows by creating a directory junction to my users folder that didn't have a space in it. You can run a command like this in an administrative powershell:

cmd /c mklink /J "C:\Users\myname" "C:\Users\My Name"

You can then use this junction as if it were your real user directory:

npm config set cache C:\Users\myname\AppData\Roaming\npm-cache

npm config set prefix C:\Users\myname\AppData\Roaming\npm

(the above should update your user .npmrc file)