The Change only the text size option was turned off in Windows 10 Creators Update. Unfortunately, the setting was not supported throughout the entire system. For example, it didn’t work with the Start menu, Cortana, Edge and some applications.
For an alternative method of changing your text size, you can use the Scale and layout options within Settings > Display. Use the dropdown under
Change the size of text, apps, and other items to make things bigger or smaller.
If you’d prefer your text, apps, and other items to be even bigger or smaller, click the
Custom scaling feature to go outside the ranges that Windows recommends for your hardware’s screen size and resolution.
If the text looks fuzzy or blurry when you use custom scaling, this might happen if the custom size is not set to a 25% increment. For example, if your custom scaling is set to 157%, try changing it to 150% or 175%.
Note: Microsoft recommends keeping your display resolution set to the “recommended” value. If you use custom scaling to go outside the range that Windows recommends, some text, apps, and other items may become unreadable. If you’re not able
to read the screen well enough to restore your display settings, try starting Narrator by pressing the Windows logo key + Enter. Then press Tab to navigate through the interface until you find the right option for restoring your display settings.
You can find more information at
Making Windows easier to see.
Let us know if you need further assistance.