I would like to see what I write in TexMaker and I follow the instructions in this youtube site, but I get continuously the Alert message in the following picture. What I do wrong, please?

enter image description here

  • 3
    Te maker cannot load your tex installation. What do you use? Miktex? Texlive ? You probably want to check "options" and "configure texmaker". A screenshot of those could help.
    – JeT
    Jun 29, 2021 at 8:34
  • 1
    You are aware that TeXMaker is just an editor? You still need to install a latex installation like MikTeX or TeXLive. Or you can use overleaf.com where everything runs in the browser, no installation required.
    – daleif
    Jun 29, 2021 at 8:40
  • 1
    Welcome to TeX.SX! It is always better to copy & paste the relevant code and the error message instead of making a screenshot of it and choose a more descriptive title. If you want to set the text size to 12pt the option of article should be 12pt. However, the cause of the error here is probably, as suggested in the other comments, a missing installation of LaTeX.
    – dexteritas
    Jun 29, 2021 at 8:43
  • @daleif, I have installed MikTeX, but it does not work either, any other suggestions please?
    – dmtri
    Jun 29, 2021 at 9:50
  • 2
    You should probably have a look at some introductional material about latex and friends. See fx dickimaw-books.com/latex/novices
    – daleif
    Jun 29, 2021 at 12:06


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