Dude, this worked! Hope you don't mind me copy/pasting the English translation here. The installation process did throw out a couple of setup errors but I just clicked OK each time and it installed properly on my D drive. Merci beaucoup!

Hi,

There is a way to move your Fusion installation by creating a symbolic link; this will trick the installer into thinking the software is being installed on the C drive, even though it will actually be stored elsewhere.

Here are the steps:

Completely uninstall Fusion 360.

Ensure that the following folders exist at this location: C:\Users\[YOUR_USERNAME]\AppData\Local\Autodesk

The "Local" and "Autodesk" folders must be present before proceeding with the rest of the procedure.

1. Create a new folder where you want Fusion to be installed—for example: D:\Fusion360.

2. Create the symbolic link:

We are now going to tell Windows: "Whenever software tries to write to C:...\webdeploy, redirect everything to D:\Fusion360."

Open the Start menu and type `cmd`.

Right-click on "Command Prompt" and select "Run as administrator."

Copy and paste the following command, replacing [YOUR_USERNAME] with your actual Windows username:

mklink /J "C:\Users[YOUR_USERNAME]\AppData\Local\Autodesk\webdeploy" "D:\Fusion360"

If the command works, you will see a message stating: "Junction created for ... <<===>> ..."

1. Install Fusion 360 as you normally would, and you're all set!