You can change the windows font by following the below directions:
Open Control Panel.
Open the Fonts option.
See the font available on Windows 10 and note the exact name of the font you want to use (e.g., Arial, Courier New, Verdana, Tahoma, etc.).
Open Notepad.
Copy and paste the following registry code into the text file:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts]
"Segoe UI (TrueType)"=""
"Segoe UI Bold (TrueType)"=""
"Segoe UI Bold Italic (TrueType)"=""
"Segoe UI Italic (TrueType)"=""
"Segoe UI Light (TrueType)"=""
"Segoe UI Semibold (TrueType)"=""
"Segoe UI Symbol (TrueType)"=""
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes]
"Segoe UI"="ENTER-NEW-FONT-NAME"
In registry code above, make sure to replace ENTER-NEW-FONT-NAME with the name of the font you want to use like Courier New.
Click File.
Click Save As.
Under "Save as type," select All Files, and name your file anything you want with the .reg extension.
Click Save.
Double-click your new .reg file to merge into the registry.
Click Yes.
Click OK.
Restart your computer to complete the task.
Once your computer restarts, you should see the new font family throughout the elements, including on File Explorer, message box, taskbar, and apps that make use of the default system font.