go to the location where your PDF file is stored. For example, the Google Chrome browser which is installed on all student PCs and computers in lecture rooms has its own built-in PDF viewer. Adobe PDF Reader is a relatively large program which can run slowly - but there are other programs that can view PDFs. The file will be deleted automatically the next time the computer is shut down but you can also delete it manually when you have finished with it if it contains confidential information. Choose File > Save As and choose Computer. Sometimes network delays can be the cause of a slow response so if you want to be able to go backwards and forwards through a file quickly, for example in a lecture, you could temporarily save the file locally on the computer: Try saving the file locally on the computer you are using. This preview can cause a noticeable lag, especially if you drag a long distance. This turns off the little page preview which appears next to the scroll bar if you scroll through the document by clicking and dragging. Disable the page preview on the scrollbar.Ĭlick on View > Page Display > Enable scrolling. 
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: 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.Ĭlick 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
PDF documents can take a while to open and when scrolling, Adobe Reader can freeze and, occasionally close down altogether. Sometimes there are problems viewing large PDFs in Adobe Reader. 2609What should I do if Adobe Reader crashes, stops responding or if I have other problems opening PDF documents using it?
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