[Latex][MikTex][windows] Fixing the error that mathtools.sty package is not found

These are the steps I took on windows OS to fix the package error in MikTex.

Go to the console and type "cmd"

Now go to the directory where MikTex was installed on your machine.

>> cd C:\Program Files (x86)\MiKTeX 2.9

>> cd miktex\bin

And then with the administrator settings open the package console using this command:

>> mpm_mfc_admin

This prompts a gui where you can see different packages available. Simply search for the "mathtools" package and install it by clicking + symbol on the top-left side of this GUI. Hope this helps!

[Latex] Installing packages like mathtools, enumitem, etc on Windows 8 using MikTek 2.9

You can directly download a .sty file and refer it in your .tex file but not always this works as sometimes a single package may require other sub-packages to be installed.

Inorder to install a new package using MikTex on Windows 8, it is very simple. Here are the steps:

1. Search for cmd in the applications search option
2. And right click this option and choose 'Run as administrator'
3. Then go to the folder where MikTex 2.9 is installed. For me it is: 'C:\Program Files (x86)\MikTex 2.9'
4. Further go to the subdirectory: 'C:\Program Files (x86)\MiKTeX 2.9\miktex\bin'
5. Once you are in this folder, type the command mpm_mfc_admin on command prompt which pops out a MikTex Package Manager console showing the different packages available.
6. From here choose whatever package you want to install by selecting that and pressing the '+' option on the top.

Thats all folks!