Latex installation

• How to Download and Install the memoir Class in MiKTeX
  Install the memoir LaTeX class in MiKTeX through MiKTeX Console, or download its distribution from CTAN and verify it with a test file.
• How to Fix MiKTeX 2.9 Installation Problems on Windows 8.1
  Diagnose MiKTeX 2.9 installation failures on Windows 8.1 by checking installer age, architecture, permissions, network access, and setup logs.