Frequently Asked Question

Why is Windows Defender SmartScreen is preventing me from installing?
Last Updated about a month ago

Please read the warning dialog carefully.    Does it say that our installer is an "unrecognized app" that was prevented from starting?    This is expected.  It's not a report of a virus or malware.

Windows Defender SmartScreen will warn everybody about our installers until they've been installed enough that they decide it's safe to remove the warning.    I don't know exactly how many have to install it or how long it has to be out, or any other criteria, but the warnings do eventually stop.

To install the program, you click the More info link:


The dialog will then show you the App filename, the Publisher (make sure it's, and a "Run anyway" button:


Here's an example in German:


** IF A VIRUS OR MALWARE is the reason for the popup, please report it to  The detection is most probably a false-positive.  You can check out how 70+ different virus scanners evaluate the installer by clicking the VirusTotal link in the information box next to the download file link you clicked.   

The rest of this page is just here for reference.

Excerpt from

Microsoft Defender SmartScreen

Microsoft Defender SmartScreen determines whether a downloaded app or app installer is potentially malicious by:

  • Checking downloaded files against a list of reported malicious software sites and programs known to be unsafe. If it finds a match, Microsoft Defender SmartScreen shows a warning to let the user know that the site might be malicious.
  • Checking downloaded files against a list of files that are well known and downloaded by many Windows users. If the file isn't on that list, Microsoft Defender SmartScreen shows a warning, advising caution.

(geek information) Here is an explanation for publishers like us on the website our Sectigo partner, KSoftware: What is this "FILE is not commonly downloaded and could harm your computer" message? (SmartScreen)

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