Adobe applications load fonts at startup. After installing a new font you need to:

1. Completely quit Photoshop (or Illustrator / InDesign).
2. Relaunch the application.
3. The font will appear in the font picker. Use Ctrl+T (Windows) or Cmd+T (Mac) to open the Character panel.

In Photoshop 2021+ you can also go to Type → More from Adobe Fonts to sync cloud fonts without restarting.

This is a known issue when a corrupt or incompatible font is installed system-wide. Steps to fix:

1. Open your Fonts folder (C:WindowsFonts on Windows, or Font Book on Mac) and remove recently installed fonts one by one until Photoshop loads normally.
2. Use a font manager such as MainType or FontBase to activate fonts on demand rather than installing them all permanently. This prevents conflicts and speeds up application launch.
3. If the issue persists, run Adobe Font Cache cleanup: quit all Adobe apps, delete the font cache files in %AppData%Adobe<AppName>CT Font Cache, then restart.

• Don't install all your fonts at once. Having thousands of active fonts significantly slows down Adobe apps at launch.
• Use Adobe Fonts (included with Creative Cloud) for a curated library of high-quality typefaces — they sync automatically without cluttering your system font folder.
• For font effect graphics, modern tools like Canva or the Photopea browser editor can handle quick text treatments without needing Photoshop installed locally.
• Check font compatibility: OpenType (.otf) is the current standard and is fully supported across Photoshop CC, Illustrator, and InDesign.