Some friends like to enable the "Level Review" function of IE browser and set passwords ("Internet Options → Content →Level Review"). In this way, when the page with "ActiveX" is displayed, a prompt message "Level review does not allow viewing" will always appear, and then the exit command dialog box pops up, asking you to enter the guardian password. If the password is incorrect, stop browsing.
However, if this password is forgotten, you cannot browse these pages. Even if IE browser is reinstalled, the security password cannot be removed. At this time, you can use the registry to clear it. Run the "" command, open the "Registration Editor" window, find the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies branch, select the "Ratings" subkey under the Policies subkey, and press the "Del" key to delete it. Since the "Key" key value data under the "Ratings" subkey is an encrypted password, if the subkey is deleted, the IE browser naturally thinks that we have not set the password.