Arial regular looks like Arial black

[Maja5D8E]

Anyone know how to fix this? The text is set to Arial regular but it looks like Arial Black. It's only in indesign as it works fine in illustrator.

[Eugene Tyson]

Any font folder in the same folder as the indesign file?

Are there more than 1 version of Arial installed?
Can you uninstall it and reinstall?

Windows or Mac?

Windows - you can try
https://woshub.com/how-to-restore-default-fonts-in-windows-8-1/#:~:text=Go%20to%20the%20Control%20Pa....

Mac 

https://support.apple.com/en-ie/guide/font-book/fb34862/mac