There are always wrong messages (false messages) about Virus and Trojans, from Windows Defender or other Anti Virus Software!
A real virus can not be detected, better said only then, if it has spread on many computers.
The protection is only guaranteed to 99.9% And 0.1% are open.
In this case: Accused! and In doubt against the accused!
Before I upload the software I test it Always on VirusTotal with over 50 virus scanners!
Even if the protection is not 100% anyway, the protection is very important!
Inform your antivirus software vendor about the error message so the vendor can improve your software! They will be grateful to you!
see also: ... How to Report Malware or False Positives to Multiple Antivirus Vendors!
FAQ 7: Updated on: March 6th 2017 10:29