Follow these instructions below to enable the option To Disable or Remove Extensions from Chrome. Select a default app for PDFs in Windows. Toggle off the extensions you suspect In such cases, it’s usually because Chrome’s PDF viewer makes downloaded files open in it by default. If you have a PDF reader and the PDFs are still opening ,  · PDFs open in Chrome instead of Adobe because of changes made to enhance users’ experience where they might not have or know how to download Adobe Stop PDF fro