Microsoft Disables MSIX App Installer Protocol Widely Used in Malware Attacks

December 29, 2023 at 01:06AM Microsoft has disabled the ms-appinstaller protocol handler by default due to abuse by threat actors distributing malware. Malicious MSIX application packages are used to deliver ransomware via Microsoft Teams or fake advertisements. Multiple financially motivated hacking groups have exploited the App Installer service. This is not the first time Microsoft … Read more