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This document will walk you through step-by-step on how to set Adobe Acrobat Reader DC as your default PDF viewer in Windows and Mac. To begin, click on the appropriate system you are using below to see the instructions for that system.
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Right-click any PDF document you have stored on your computer. Move your mouse over ‘Open with', then on the panel that opens click ‘Choose another app’
 3. Click on Adobe Acrobat Reader DC 4. Check the ‘Always use this app to open .pdf files’, then click OK  | Tip |
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The PDF you initially selected will now open with Adobe Acrobat Reader. Any PDFs you click on in the future will be automatically opened using Adobe Acrobat Reader from now on. |
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Click on any PDF file (single-click, not double-click) to highlight it At the top of the screen on the menu bar, click File then click Get Info  Image Modified3. Click the triangle next to Open With, and choose Adobe Acrobat Reader DC from the pop-up list.  Image Modified4. Click the Change All… button
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Any PDFs you click on in the future will be automatically opened using Adobe Acrobat Reader from now on. |
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