If the extension is "Managed by your organization" and cannot be toggled off, it may be forced via the Windows Registry:
To disable the Symantec Endpoint Protection (SEP) Chrome extension, you typically need administrative access, as the software is designed to prevent unauthorized removal. Broadcom TechDocs For Managed Clients (via SEPM) If the extension is managed by the Symantec Endpoint Protection Manager (SEPM) , it is often forced via a registry key called ExtensionInstallForceList . To remove it: Disable Browser Intrusion Prevention : In the SEPM console, navigate to Policies > Intrusion Prevention . Disabling the "Browser Intrusion Prevention" disable symantec endpoint protection chrome extension
Stop and start Symantec Endpoint Protection on OS X · GitHub If the extension is "Managed by your organization"
If you are reading this, you are likely frustrated. That small, shield-shaped icon in the top-right corner of your Google Chrome browser is causing chaos. Perhaps it is slowing down your page load times, blocking access to a legitimate internal company tool, consuming excessive RAM, or simply triggering false-positive security alerts. Disabling the "Browser Intrusion Prevention" Stop and start
Sometimes the extension can be toggled off directly from the SEP client software on the taskbar/system tray.