"The connection is not trusted" error

This problem is more common for the Firefox-based browsers and Opera 12.


The easiest way to solve it is to:

  1. Go to Adguard General Settings.

  2. Scroll to the bottom to find 'Reinstall Certificate' button.

  1. Click on it and wait until the certificate is automatically reinstalled. Note that browsers all will be closed.

  2. Open your browser. The problem should be solved.

If the problem persists, you should use one of specified manuals depending on your browser:

Firefox

If basic manual didn't help you, there are two ways to solve the problem.

First way

Manual certificate import.

In case you want to keep filtering HTTPS protocol, we suggest you this instruction on manual Adguard certificate importing.

To do so:

  1. Open Firefox browser and proceed to Options menu

  1. Open 'Advanced -> Certificates' tab, and find 'View Certificates' in the window. Click on it.

  1. Choose 'Authorities' tab and click on "Import...".

  1. In the opened window type in %ProgramData%\Adguard\NetworkTemp\SSL\ and choose Adguard Personal CA in the shown folder, then press 'Open'.

  1. Check the checkboxes as it is shown on the screenshot and click 'OK'.

  1. In 'Authorities' window choose 'Adguard personal CA' and click on 'View...'.

  1. Make sure that the certificate is valid for the current date.

Second way

Disabling HTTPS filtering

To do so:

Go to the Adguard General settings.

Disable the HTTPS filtering as it’s done in this picture:

We do not recommend this way, as it will leave all your HTTPS traffic unfiltered. Only use it as a temporary measure and contact our support team.

Opera

If basic manual didn't help you, there are two ways to solve the problem.

First way

Manual certificate import.

In case you want to keep filtering HTTPS protocol, we suggest you this instruction on manual Adguard certificate importing.

To do so:

  1. Open Opera browser and proceed to Settings -> Preferences menu

  1. Open 'Advanced -> Security' tab, and find 'Manage Certificates' in the window. Click on it.

  1. Choose 'Authorities' tab and click on "Import".

  1. In the opened window type in %ProgramData%\Adguard\NetworkTemp\SSL\ and choose Adguard Personal CA in the shown folder, then press 'Open'.

  1. In the opened window click on 'View...'.

  1. Check the checkboxes as it is shown on the screenshot and click 'OK'.

  1. In the opened window confirm that you trust the issuer.

  1. In 'Authorities' window choose 'Adguard personal CA' and click on 'View...'.

  1. Make sure that the certificate is valid for the current date.

Second way

Disabling HTTPS filtering.

To do so:

Go to the Adguard General settings.

Disable the HTTPS filtering as it’s done in this picture:

We do not recommend this way, as it will leave all your HTTPS traffic unfiltered. Only use it as a temporary measure and contact our support team.