What should I do if Adobe Reader crashes, stops responding or if I have other problems opening PDF documents using it?
Sometimes there are problems viewing large PDFs in Adobe Reader. PDF documents can take a while to open and when scrolling, Adobe Reader can freeze and, occasionally close down altogether.
The behaviour is not consistent but if you encounter it with a file you're using, the following suggestions will help you to view the page more easily.
Click on Edit > Preferences and then in the left hand pane select the General option (in Acrobat Reader X) or the Security (enhanced) option (in Acrobat Reader XI) and untick the option "Enable Protected Mode at startup" then click OK
This reduces the time it takes for Adobe to launch and should address problems with the application appearing to "freeze" when you first open it, but if you still have problems, try:
Click on View > Page Display > Enable scrolling
This turns off the little page preview which appears next to the scroll bar if you scroll through the document by clicking and dragging. This preview can cause a noticeable lag, especially if you drag a long distance.
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This is question number 2609, which appears in the following categories:
Created by David Guest on 4 December 2013 and last updated by Mark Wilson on 16 February 2018
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