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Maturity tier — First: Basic, essential — do this before anything else.
Implementation effort: Medium - requires a Central Store, a defined Chrome baseline, and an extension allowlist maintained over time.
User impact: Medium - some familiar behaviors (extension installs, password saving, personal sync) will be restricted; communicate changes before enforcement.
Google Chrome ships with hundreds of enterprise policies, but they only take effect once you load the official google.admx and chrome.admx templates into your environment. Left unmanaged, users can install arbitrary extensions, ignore Safe Browsing warnings, sync corporate data to personal accounts, and keep passwords in the browser vault — all of which widen your attack surface on the endpoint.
Hardening steps:
.adm files — use ADMX.google.admx and chrome.admx into your Central Store (\\domain\SYSVOL\domain\Policies\PolicyDefinitions) and the matching .adml files into the language folder (e.g. en-US).Computer Configuration > Administrative Templates > Google > Google Chrome.ExtensionInstallBlocklist to * and allowlist only approved extension IDs; disable the built-in password manager; restrict or disable browser sign-in/sync to corporate accounts only; enforce automatic updates.gpupdate /force, restart Chrome, and confirm every policy shows as active on chrome://policy.Most "Chrome policy not applying" issues trace back to a wrong template path, incorrect OU scope, user-vs-computer context mismatch, a browser that wasn't restarted, or a competing policy source (e.g. Chrome cloud policy overriding platform policy).
Keep building momentum
Block unauthorized executables, scripts, and installers by allowlisting trusted applications with AppLocker or Windows Defender Application Control.
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