Microsoft SmartScreen is a component of the non-server Windows 8 and Windows 10 operating systems meant to provide anti-phishing and anti-malware protection. Incidentally, it helps build a reputation for software like PaperCut NG and PaperCut MF after surpassing a sufficient threshold.
If an installer or program has a low reputation, users will be shown warnings when attempting to install the software. This countermeasure means to prevent malware, viruses, and trojans from compromising non-server OSes.
Below is a screencap of SmartScreen in action:
You may see this message when you download and run the PaperCut NG or PaperCut MF installer. The notification is due to us recently introducing a new software signing certificate that has yet to build up trust with Microsoft. This message is not a concern for the PaperCut NG or PaperCut MF software.
Luckily, the workaround, for the time being, is simple: clicking “More info” reveals the option to “Run anyway.” We expect to establish trust relatively quickly and this message not to appear for future PaperCut NG or PaperCut MF releases.