Microsoft defender false positive

Scan library/executable against several AVs:

• https://www.virustotal.com/gui/home

Report false-positive to Microsoft AV:

• https://www.microsoft.com/en-us/wdsi

Report false positive & other info

• https://nsis.sourceforge.io/NSIS_False_Positives#Where_to_report_false_positives

Online scanners

• https://virusscan.jotti.org/en-US/scan-file

Refresh AV definitions

• https://www.microsoft.com/en-us/wdsi/defenderupdates

cd %ProgramFiles%\Windows Defender
MpCmdRun.exe -removedefinitions -dynamicsignatures
MpCmdRun.exe -SignatureUpdate