How to disable incognito mode in your browser Google Chrome on Windows Disable reg add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome /v IncognitoModeAvailability /t REG_DWORD /d 0x00000001 Re-enable reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Google\Chrome /v IncognitoModeAvailability /f Google Chrome on Linux Disable sudo mkdir -p /etc/opt/chrome/policies/managed sudo nano /etc/opt/chrome/policies/managed/policy.json { "IncognitoModeAvailability": 1 } Re-enable sudo rm /etc/opt/chrome/policies/managed/policy.json Firefox on Windows Disable reg add HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox /v DisablePrivateBrowsing /t REG_DWORD /d 0x00000001 Re-enable reg delete HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Mozilla\Firefox /v DisablePrivateBrowsing /f Firefox on Linux Disable sudo mkdir -p /usr/lib/firefox/distribution sudo nano /usr/lib/firefox/distribution/policies.json { "policies": { "DisablePrivateBrowsing": true } } Re-enable sudo rm /usr/lib/firefox/distribution/policies.json