How to Hide Empty Categories in WordPress

Install Plug-in
1. Log into your WordPress website.
2. Click 'Plugins' from the menu on the left, then click 'Add New.'

3. Type 'Category' in the search box, then press the 'Enter' key.
4. Click 'Install Now' under 'AVH Extended Categories Widgets,' then confirm the installation. WordPress will automatically install the plug-in to your blog.
5. Click the 'Activate Plugin' link to activate the plug-in on your WordPress.
Delete Old Widget
6. Click 'Appearance' in the menu on the left, then click 'Widgets' to open your widget page.
7. Click the name of the widget area that contains your current 'Category' widget.
8. Click the current 'Category' widget, then click 'Delete' to remove it from your widget sidebar.
Add New Widget
9. Click the 'AVH Extended Categories' widget box in the widget bank on the left side of the screen.
10. Drag the widget box into the widget area that previously contained the 'Category' widget. This will place it on your blog's sidebar.
11. Type a title for your new widget box in the text box.
12. Place a check in the box next to 'Hide Empty Categories' option.
13. Configure the widget with any other changes you would like to make, then click the 'Save' button. When you view your WordPress site, you will see a new categories widget that no longer displays empty categories on your sidebar.