This tutorial will show you how to put OpenCart 2 website in maintenance mode.
In order to enable maintenance mode you should perform the following steps:
Open your OpenCart admin panel and navigate to the System -> Settings tab.
Click Edit button on the right of your store name to open settings page:
Navigate to Server tab:
Select yes in a Maintenance Mode section:
Click Save button on the top right of the page to save the changes:
Log off and refresh the page to see maintenance mode enabled on your site.
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Feel free to check the detailed video tutorial below: