For a Java desktop application, I am using Launch4J to create EXE, and NSIS to create installer.

It works fine all the while, until recently Chrome and Edge browser both give a download warning

...exe is not commonly downloaded and may be dangerous

It looks as follow

Chrome

Edge

Old version 1.0.7.56 has no issue

My previous version of download (version 1.0.7.56) doesn't flag any warning

For Chrome, Google maintains a list of trusted software publishers. If you're a software publisher and your binaries are flagged by Chrome, learn how to resolve malware or unwanted software issues related to your downloads.