Content Comparison

...

1. Click the Apple menu, and select "System Preferences".
   
2. In the top row, click on "Security & Privacy".
   
3. Make sure the General button is selected at the top, then look for the section titled "Allow apps downloaded from".
   Image Modified
4. Click the lock in the lower left corner to make changes, and enter your Mac username and password when you're asked for it.
   

5. Under "Allow apps downloaded from:" select "Anywhere" if it isn't already selected. A dialog will pop up warning that "Choosing 'Anywhere' makes your Mac less secure." Click "Allow from anywhere".
   

6. Close System Preferences.

...