Chrome protects you from known phishing sites and malicious downloads using an integrated feature called Safe Browsing. Turning this feature off stops the browser from blocking downloads that it would otherwise deem unsafe.
Step 1: Open the Chrome menu (click three-dot icon on upper-right corner), and then click Settings.
Step 2: Scroll down on the Settings page, and then click Advanced.
Step 3: Underneath the Privacy & Security section, turn off the switch next to Safe Browsing. And you are good to go.
Chrome will not block any downloads after you made the changes.
To block unsafe downloads later, head back into the Chrome Settings panel and turn on the switch next to Safe Browsing.