Word problem with Adobe Garamond Pro
It's fixed. The culprit appears to have been Adobe Acrobat Reader DC and was fixed with a recent update (version 2020.12.20043). You may have to quit Word and restart it, you possibly have to run Reader once before the fonts work again.
Not my observation, but taken from a discussion at a Microsoft board. Thanks to H. Tomás Gómez-Arostegui for pointing me to his thread there.