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I am using Windows 8. I have installed MiKTex 2.9 and TeXstudio. However, when I compile the document, the process exits with the following error:

File `mathtools.sty' not found. \usepackage

When I searched for the solution, it suggested to open the package manager folder in MiKTeX. However, I could not find any folder in the main MiKTeX folder.

I have tried re-installing MiKTex and TeXstudio, but the problem still persists.

I really hope that you can help me and explain in a simple way the mistakes I am doing.

Thank you!

marked as duplicate by percusse, Mico, barbara beeton, user31729, user13907 May 28 '15 at 18:59

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  • 1
    (1) Welcome, (2) Please open the miktex package manager. In one of the menus there is an item called 'synconize', use it, Then find and install the mathtools package. Note that TeXstudio is not related to this. – daleif May 28 '15 at 12:39
  • Where can I find the package manager? – Aashay Tripathi May 28 '15 at 12:47
  • Hi Aashay, please have a look at all answers in this question, it is a known issue : tex.stackexchange.com/questions/199883/… Could you please let us know if that answers your question? – percusse May 28 '15 at 12:47
  • Ahh, windows 8, it is in the list of programmes somewhere. Not a windows 8 user. – daleif May 28 '15 at 13:16
  • For windows 8 part look at tex.stackexchange.com/questions/152669/… – percusse May 28 '15 at 17:21