[Package Issue]: mcmilk.7zip-zstd

Please confirm these before moving forward

• I have searched for my issue and not found a work-in-progress/duplicate/resolved issue.
• I have not been informed if the issue is resolved in a preview version of the winget client.

Category of the issue

Installation issue.

Brief description of your issue

mcmilk.7zip-zstd version 26.02-v1.5.7-R2 is flagged as malware by Windows Defender and 17 other security vendors (https://www.virustotal.com/gui/file/22dc4608d911d7c831437b969db66a42d0477cd3f5d93987cae9f59774857fc1)

Steps to reproduce

winget install mcmilk.7zip-zstd

Actual behavior

Microsoft defender flags 7z26.02-zstd-x64.exe as malware and the installation fails with 0x800704c7 : The operation was canceled by the user

Expected behavior

Version v26.02-v1.5.7-R2 should be removed.

Environment

> winget --info

Gestionnaire de package Windows v1.29.290
© 2026 Microsoft. Tous droits réservés.

Windows: Windows.Desktop v10.0.26200.9168
Architecture du système : X64
Package : Microsoft.DesktopAppInstaller v1.29.290.0

Répertoires de WinGet
-----------------------------------------------------------------------------------------------------------------------------------------
Journaux                                     %LOCALAPPDATA%\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\LocalState\DiagOutputDir
Paramètres utilisateurs                      %LOCALAPPDATA%\Packages\Microsoft.DesktopAppInstaller_8wekyb3d8bbwe\LocalState\settings.json
Répertoire des liens portables (utilisateur) %LOCALAPPDATA%\Microsoft\WinGet\Links
Répertoire des liens portables (ordinateur)  C:\Program Files\WinGet\Links
Racine de package portable (utilisateur)     %LOCALAPPDATA%\Microsoft\WinGet\Packages
Racine du package portable                   C:\Program Files\WinGet\Packages
Racine de package portable (x86)             C:\Program Files (x86)\WinGet\Packages
Téléchargements du programme d’installation  %USERPROFILE%\Downloads
Modules de configuration                     %LOCALAPPDATA%\Microsoft\WinGet\Configuration\Modules

Liens
---------------------------------------------------------------------------------------------
Déclaration de confidentialité        https://aka.ms/winget-privacy
Contrat de licence                    https://aka.ms/winget-license
Avis de tiers                         https://aka.ms/winget-3rdPartyNotice
Page d’accueil                        https://aka.ms/winget
Conditions générales du Windows Store https://www.microsoft.com/en-us/storedocs/terms-of-sale

Paramètre administrateur                  État
---------------------------------------------------
LocalManifestFiles                        Désactivé
BypassCertificatePinningForMicrosoftStore Désactivé
InstallerHashOverride                     Désactivé
LocalArchiveMalwareScanOverride           Désactivé
ProxyCommandLineOptions                   Désactivé
ConfigurationProcessorPath                Désactivé
DefaultProxy                              Désactivé

Screenshots and Logs

No response

Start by reproducing the issue with winget install mcmilk.7zip-zstd and inspect the package metadata for version 26.02-v1.5.7-R2. Confirm how that version is represented in the repository and verify that the flagged version is no longer offered after the change.