Adobe Reader (Windows) - Prevent PDF Files from Opening in a Web Browser
This article describes how to force pdf files to open within the native Adobe Reader program rather than in the web browser window, where they open by default.
These instructions are for Adobe Reader 9.0. Other versions of Adobe Reader will require similar steps.
- Launch Adobe Reader 9.0.
- Open the Edit menu and select Preferences.

- On the left hand side of the preferences window, select the Internet category.
- Uncheck the "Display PDF in browser" option.

- Click OK.
PDF files should no longer open within the browser, but instead within a native window of Adobe Reader.
