Wolfram Player installs to C:\Program Files\Wolfram Research\Wolfram Player by default on Windows. To install the program to a different directory, the installation needs to be run on the command line.

1. Run the Wolfram Player Download Manager to download the installation files. When the download completes, close the Download Manager without selecting Launch.
2. Identify the Wolfram Player download folder starting with “M-WIN-D-” inside your Downloads folder, C:\<username>\Downloads.
3. Open a Command Prompt and navigate to this directory:
   cd C:\Users\<username>\Downloads\<M-WIN-D-...>

   … where <M-WIN-D-…> is the full name of the directory identified in the previous step.

4. In the Command Prompt, begin installing:
   setup.exe /dir=<desired directory>

   … where <desired directory> is the directory you want to install to. For example, to install to D:\Wolfram Player\:

   setup.exe /dir="D:\Wolfram Player\"
5. Wait for the installation to complete.

Wolfram Player is now installed to your desired directory.