Changing the default system font on Windows can help personalize and enhance your user experience on Microsoft's operating system. Below is a concise ...

Most Microsoft apps use the same font by default. However, if you want to always use a different font in one or all of your desktop 365 apps, you can change the default manually.

QUICK ANSWER To change the default font in Outlook on Windows, head to Settings > Mail > Compose and reply, then select your default font and size under Message format.