Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

"This file is not commonly downloaded" for zip files in firefox but not in chrome or edge

more options

So since I was making a website for the first time, I registered a new domain name with the extension ".ml"(example something.ml) since I get it for free. Now, I hosted this domain on a well know server provider and I have an HTML code which makes user download a zip file containing some png images when clicked on a button. When I download the zip file on chrome, it works fine. But on Firefox, it says "This file is not commonly downloaded." I checked several hours but have failed to solve this issue which doesn't arrise in chrome or edge. Is it because of extension ".ml"?

The code I used for sending the zip file was ``` $zip = new ZipArchive(); $zip->open("$zipcreated"); $sendfolder = "$zipcreated"; header('Content-type: application/zip'); header('Content-Description: File Transfer'); header("Content-Disposition: attachment; filename=$sendfolder"); header('Expires: 0'); header('Cache-Control: must-revalidate'); header('Pragma: public'); $size = filesize($sendfolder); header('Content-Length: ' . filesize("$sendfolder")); ob_clean(); readfile($sendfolder); ``` I tried using missingpadlock website and other checks but have failed to understand where the problem lies. Any help would be greatly appreciated!

So since I was making a website for the first time, I registered a new domain name with the extension ".ml"(example something.ml) since I get it for free. Now, I hosted this domain on a well know server provider and I have an HTML code which makes user download a zip file containing some png images when clicked on a button. When I download the zip file on chrome, it works fine. But on Firefox, it says "This file is not commonly downloaded." I checked several hours but have failed to solve this issue which doesn't arrise in chrome or edge. Is it because of extension ".ml"? The code I used for sending the zip file was ``` $zip = new ZipArchive(); $zip->open("$zipcreated"); $sendfolder = "$zipcreated"; header('Content-type: application/zip'); header('Content-Description: File Transfer'); header("Content-Disposition: attachment; filename=$sendfolder"); header('Expires: 0'); header('Cache-Control: must-revalidate'); header('Pragma: public'); $size = filesize($sendfolder); header('Content-Length: ' . filesize("$sendfolder")); ob_clean(); readfile($sendfolder); ``` I tried using missingpadlock website and other checks but have failed to understand where the problem lies. Any help would be greatly appreciated!
Attached screenshots

All Replies (2)

more options

If you downloaded a program/file from the internet then a zone identifier gets added to the file via an Alternate Data Stream (ADS). You can check the Security tab of the program via the right-click context menu in Windows Explorer and possibly remove this identifier. See also:

more options

I don't know why Firefox determines that some downloads are "not commonly downloaded" which implies that all the other files we download are "commonly downloaded." How is it possible to know this??

I suspect it could be related to the file hosting or some other criterion related to how the file is served. A search turned up others with this issue, for example, a user hosting files on Amazon S3 in 2017: https://stackoverflow.com/questions/43549196/fix-this-file-is-not-commonly-downloaded-warning-firefox-only