Prevent users from downloading harmful files
Chrome version 61 and later.
Applies to managed Chrome Browsers on Windows, Mac, and Linux.
As a Chrome administrator, you can use the DownloadRestrictions policy to prevent users from downloading dangerous files, such as malware or infected files. You can prevent users from downloading all files or those that Google Safe Browsing identifies as dangerous. If users try downloading dangerous files, Safe Browsingshows them a security warning that they can’t bypass.
Step 1: Review the policy
Prevents users from bypassing Safe Browsing security warnings to download dangerous files. Or, prevents all downloads.
Set this policy with one of the following values:
- 0 - No restrictions: All downloads are allowed. Users still receive warnings about sites identified as dangerous by Safe Browsing. But, they can bypass the warning and access the site.
- 1 - Block dangerous downloads: All downloads are allowed, except those marked with Safe Browsing warnings of dangerous downloads.
- 2 - Block potentially dangerous downloads: All downloads are allowed, except those marked with Safe Browsing warnings of potentially dangerous downloads.
- 3 - Block all downloads: No downloads are allowed.
Unset: Defaults to No restrictions, as described above.
What the policy restricts
Setting this policy restricts downloads that are triggered on webpages when users click a download link on the page or right-click a file and choose Save link as.
However, restrictions do not apply when users save a webpage by clicking File Save page as, or Print Save as PDF.
Step 2: Set the policy
Click below for steps, based on how you want to manage these policies.Windows
Using Group Policy
- Go to Policies Administrative Templates Google Google Chrome.
- Enable Allow Download Restrictions.
- Set an option:
- Block all downloads
- Block all dangerous downloads
- Block potentially dangerous downloads
- No special restrictions
- Deploy the policy to your users.
In your Chrome configuration profile, add or update the following key and then deploy the change to your users.
Set the DownloadRestrictions key to <integer>value</integer>, where <value> is 0, 1, 2, or 3.
In your preferred JSON file editor, add or update a JSON file and then deploy the change to your users.
- Go to your etc/opt/chrome/policies/managed folder.
- Set the DownloadRestrictions key to 0, 1, 2, or 3.