I just installed Lyx 2.1 on my computer for the first time. I wanted to create my first trial pdf but switching to viewing mode is for some reason not working with the Acrobat Reader DC. I tried many options found on the web but I am afraid my little knowledge is not sufficing to make it work.

I would really appreciate a detailed answer :)


  • See lyx.org/trac/ticket/9512
    – scottkosty
    Jun 30 '15 at 21:47
  • 2
    Also, you might want to give SumatraPDF a try. I've heard good things about it from Windows users.
    – scottkosty
    Jun 30 '15 at 21:48
  • 2
    Adobe crobat locks .pdf files, so that you have to close it before recompiling. SumatraPDF doesn't lock files.
    – Bernard
    Jun 30 '15 at 22:13

Try replacing the file pdfview.exe on your PC with this one: http://ftp.lyx.de/LyX%202.1.3/pdfview.exe

Usually it is located in the folder C:\Program Files (x86)\LyX 2.1\bin

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