downloads fail windows 10 firefox browser

Most Chromium-based browsers block downloads from HTTP sources if the originating page uses HTTPS. Google introduced the blocking of downloads in an insecure context earlier this year in Chrome 86. In other words: 15 in 1000 downloads will be blocked once the change lands in Firefox Stable, provided that the percentage value is about the same. Mozilla notes that about 98.5% of all downloads in Firefox Nightly use HTTPS.

FALSE: to disable the security feature.

TRUE: to keep the security feature enabled.

Use the toggle icon to set the value to.

Search for dom.block_download_insecure.

Load about:config in the Firefox address bar.

It can be turned off to restore the previous downloading behavior: It may still be a good idea to run the file through a virus scanner or service such as Virustotal to make sure it is clean and likely without danger.įirefox 92 comes with a preference switch that controls the behavior. The blocking happens only because of the insecure connection, not because the file has a virus or other unwanted content. Potential security risk - with a red exclamation mark icon.Ī click or tap on the download in the panel opens additional information and options.įirefox users may allow the download using the prompt that opens or remove the file.

The linked resource is not on a HTTPS resource, but on a HTTP resource this is what mixed content in the context of downloads refer to.įiles that are transferred via insecure connections may be tampered with, for instance by other actors on a network.įirefox will block insecure downloads that originated from HTTPS sites soon, likely in Firefox 92, which will be released on September 7, 2021.įirefox won't download the file in this case automatically the browser displays a warning in the download panel - File not downloaded. Imagine the following scenario: you visit a secure site that is using HTTPS and start a download by clicking on a link. Mixed content refers to sites using secure connections and insecure connections.

Downloads fail windows 10 firefox browser