The Aggressive Security Filter
Google Chrome is equipped with a robust security feature known as “Safe Browsing,” designed to protect your computer from malware, ransomware, and phishing attacks. When you attempt to download a file, Chrome checks it against a massive, continuously updated database of known threats. While this is generally an excellent feature, Safe Browsing can be overly aggressive. It frequently flags completely harmless, obscure files (like a custom script written by a coworker, an unverified indie game, or an older niche piece of software) as “dangerous.” When this happens, Chrome will either completely block the download from starting, or worse, allow the download to finish and then immediately delete the file from your Downloads folder before you can open it.
How to Bypass the Block on a Per-File Basis
If Chrome blocks a file, you don’t necessarily have to disable your entire security system to get it back. You can manually force Chrome to “keep” the file.
1. When Chrome blocks a download, it will display a warning message in the Downloads tray (the downward arrow icon at the top right of the browser) saying “Dangerous download blocked” or “Unverified download blocked.”
2. Do not click the “Discard” button.
3. Click anywhere on the warning message to expand the Downloads list, or press Ctrl + J (Windows) or Cmd + Option + L (Mac) to open the full Downloads page.
4. Locate the blocked file in the list. Underneath the file name, click the button that says Keep dangerous file (or simply Keep).
5. Chrome will likely prompt you with a secondary warning confirming you really want to do this. Click Keep anyway.
The file will instantly appear in your system’s Downloads folder, undeleted.
How to Temporarily Disable Safe Browsing (Not Recommended)
If you are downloading a large batch of obscure files that you know are safe (such as from a private company server) and you are tired of clicking “Keep anyway” fifty times, you can turn off the protection entirely. Remember to turn it back on when you are done.
1. Click the three vertical dots in the top right corner of Chrome and select Settings.
2. In the left-hand menu, click on Privacy and security.
3. Click on Security in the main pane.
4. Under the “Safe Browsing” section, you will likely see “Standard protection” or “Enhanced protection” selected. Change this setting to No protection (not recommended).
5. A pop-up will ask you to confirm that you want to turn off Safe Browsing. Click Turn off.
Chrome will now blindly accept and save every file you download without checking for malware or deleting anything.