Mac freezes when installing updates

Problem

When using Software Update, it prompts you to restart your computer. After doing so, it installs the update which then freezes. You have to turn off the computer forcefully.

Solution

1. Double click on your main hard drive (usually Macintosh HD).
2. Go to the Library folder.
3. Go to the Updates folder.
4. Delete everything in the folder.
5. Click the Apple in the top left of the screen, then click Software Update.

Then try installing updates again.