````powershell
cd $env:TEMP
mkdir test
cd test
quarto add https://github.com/quarto-ext/lightbox/archive/refs/tags/v0.1.4.tar.gz
````

Error is (in french here)

```
ERROR: La syntaxe du nom de fichier, de répertoire ou de volume est incorrecte. (os error 123), stat 'https://github.com/quarto-ext/lightbox/archive/refs/tags/v0.1.4.tar.gz'
```

Somehow we don't resolve as url it seems, or consider it a local extension maybe ? 

Working ok on Ubuntu. 

cderv
2023-01-27T16:07:43Z
cderv
bug windows
v1.3
closed
Installing extension from url fails on Windows
https://github.com/quarto-dev/quarto-cli/issues/4124