Installer and binaries have been signed and submitted to Microsoft since a while to fix the issue with Windows Defender. https://dlang.org/changelog/2.082.0.html#signed_windows_bina...

Neither the last release nor the recent release candidate have been flagged by any AV according to VirusTotal. https://www.virustotal.com/#/file/e2ea2807faf41978a842f91890... https://www.virustotal.com/#/file/834d7547d395cc4080ab28a177...