MSI is detected as a virus by Windows Defender

Question

When scan the MSI in windows defender installed machine, Its detected as a virus.

Please refer the attached screen capture(MSI_defender_error.png).

Previously we have faced the same issue and raised a ticket to Microsoft team.
Microsoft team Concluded that, if the same issue is not reproducible in other similar systems, then its a false positive.
But now we have encountered the same issue again in 2 machines.

Machine 1: MSI is not signed the certificate(Publisher=Unknown) and scanned.
Machine 2: MSI is signed the certificate(Publisher=Valid User) and scanned.

Could you please clarify the cause for this virus detection in defender
Note: The MSI will be downloaded from storage APP using browser and scanned.

Answer 1

In case you believe this is a safe file, then you may submit sample of it and report it as incorrect detection.
Take a look at:
https://www.microsoft.com/en-us/wdsi/filesubmission
In this case, Microsoft Anti-Malware team need to review the file and confirm if it is safe or not.