Back up the registry manually. Select Start , type regedit.exe in the search box, and then press Enter.If you are prompted for an administrator password or for confirmation, type the password or provide confirmation.

选择所选扩展所需的访问权限： 单击扩展时： 此设置仅允许扩展在单击扩展时访问打开的选项卡或窗口中的当前站点。如果关闭选项卡或窗口，则必须单击该扩展才能再次打开它。