Internet restrictions do not work (2023)

Net Control 2 software uses different methods for blocking access to undesirable websites specified in Internet restriction profiles, depending on the platform (Windows, macOS, Linux), its version, and the version of Net Control 2 software.

The Protocol Layer (Mode 2) is the default mode in Microsoft Windows, provides the better accuracy and reliability. 

By default it is intended for use with Microsoft Edge (the new, Chromium-based version, and the legacy Edge), Google Chrome, Mozilla Firefox, Opera, Safari and Microsoft Internet Explorer. Other browsers may require additional adjustments of Windows Registry settings, please contact us for more information.

Important information for Google Chrome and new Microsoft Edge users. Updated on March 2023.

The latest Chrome and Edge updates introduce enabled by default specific features, which prevent Net Control 2 Internet Control Engine to capture information about visited websites and therefore ability to apply web restrictions. 

All Net Control 2 versions and updates released after Feburuary 2023 either prompt teachers to disable these specific browser features in an automatic, one-click mode or disable the features automatically if such permission was received before. Therefore, if your license allows using latest Net Control 2 updates, please update student computers first.

If you use earlier versions of Net Control 2 software, please disable the browser features on each student computer, as follows.

1. Policies / Registry 

Please set up the following registry parameters.

in both


sections, please create two parameters:

value: 0


type: REG_SZ
value: “off”

Restart browsers to apply changes. 

type chrome://policy or edge://policy , depening on the browser and check whether the policies are applied:


2. Manually in Edge and Chrome settings

2.1. in Google Chrome: please open Settings -> Privacy and Security -> Security -> Use Secure DNS -> disable. 

2.2. Then please enter chrome://flags/ in the address bar, on the appeared page please find and disable the “Async DNS resolver” option.

2.3 in Microsoft Edge: please open Settings -> Privacy, search and services -> “Use secure DNS to specify how to lookup the network address for websites” -> disable. 

2.4. in Windows Registry Editor, in the section HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Edge , please create BultinDNSClientEnabled parameter, type REG_DWORD with the value 0.

3. Windows 7; “legacy” Edge:

in Windows 7 (only), please ensure that Service Pack 1 for Windows 7 (KB976932) and Service Update KB3033929 are installed.

if the “old” (legacy) Microsoft Edge used, we recommend upgrading it with the new Chromium based Edge browser.

4. If restrictions nevertheless do not work in the Mode 2, please switch the mode to the Mode 1: select student computers in the teacher console, click the main menu command N – Options – Client Options; on the Internet page, please enable the “Mode 1” and click OK.