Domain-Joined Windows 11 VM with Microsoft Edge Lockdown for Lab Use Date: June 7, 2025 Category: Windows 11 / GPO / Domain Lab Hardening Backlink: Bypassing TPM, Secure Boot, and Microsoft Account During Windows 11 VM Setup Overview This VM is domain-joined to library.local and intended to simulate a public-access or library-style machine for a generic user ( libraryuser ). Group Policy was used to lock down Microsoft Edge and restrict system-level access. Environment OS : Windows 11 VM Domain : library.local Domain Controller : Windows Server 2022 OU : LibraryLabUsers User : libraryuser GPO : Library User Restrictions Template Type : Classic ADM (no ADMX available at the time) GPO Settings Applied Control Panel & Program Access ๐Ÿ”’ Prohibit access to Control Panel and PC settings ๐Ÿ”’ Remove Add or Remove Programs Microsoft Edge Configuration ๐Ÿงน Clear browsing data when Edge closes ๐Ÿงน Clear cached images and files on close ๐Ÿšซ Disable saving browser history โœ… Enable Do Not Track โš ๏ธ Enable insecure download warnings Edge Extensions & Downloads ๐Ÿšซ Block external extensions from being installed Startup / Homepage Settings ๐Ÿ  Configure homepage URL: https://docs.natenetworks.com ๐Ÿ” Action on Edge startup: Open list of URLs ๐Ÿงญ Sites to open: https://docs.natenetworks.com https://artash.io ๐Ÿงญ Set new tab page as homepage Start Menu and Taskbar Restrictions โŒ Disable context menus in Start Menu โŒ Remove Run from Start Menu Ctrl+Alt+Del Restrictions โŒ Remove Change Password โŒ Remove Lock Computer โŒ Remove Logoff โŒ Remove Task Manager Results Logging in as libraryuser now: Edge launches directly to the approved URLs All Edge settings and customization options are blocked Control Panel and system tweaks are locked down User cannot access Run, Task Manager, or make profile/system changes Next Steps Prevent Edge Settings Access If not already enabled, locate: Prevent access to the settings page in Microsoft Edge โ†’ Set to Enabled Add AppLocker Rules Restrict .exe launches outside of C:\Program Files and C:\Windows Enable SmartScreen & SafeSearch Policies Protect against malicious or adult content Optionally configure DNS-based content filtering (NextDNS/OpenDNS) Redirect Known Folders Use Folder Redirection to isolate documents and desktop paths per user Add User Logoff Timer / Idle Policy Use Task Scheduler or GPO to log off inactive users after X minutes