Opera under Windows

The data protection compliant Skadinavier

Opera under Windows

The browser is available for different platforms (Android, iOS, macOS, Linux, Windows, ...). Here we look at the settings under Microsoft Windows.

To access pages with Opera that require "client authentication" with a certificate, a corresponding certificate must be imported. In the example the URL "https://vc.edv-workshops.com" is to be accessed (the address does not exist).

If you have not imported a certificate, the error message "400 Bad Request - No requirred SSL certificate was sent" or "403 Forbidden" will appear when the address is accessed.

Import client certificate

A certificate comes in the form of a *.p12 file, which you receive from the provider of the respective service, including a password, e.g. by e-mail. Save the file to any location (in the example, the file with the name "CERT_pattern_karl_v2.p12" is located in the "Downloads" folder).

Opera uses the Windows certificate store, so the certificate will be imported into the Windows certificate store. Open the menu (1) in the upper left corner of the browser, then the settings (2).

In the area "Privacy & Security" (3) click on "More" ... Down arrow (4).

Open the dialog "Manage certificates" (5).

In the dialog "Certificates" switch to the tab "Own certificates" (6).

Then click on the "Import" button (7).

The certificate import wizard opens. Click on the "Next" button (8).

Click on the "Browse" button (9).

Select the previously saved p12 file (10) and confirm your selection by clicking the "Open" button (11).

The path is transferred to the wizard (12). Click on "Next" (13).

In the next step enter the password for the certificate (14). Leave the options as set. Click on the "Next" button (15).

As certificate store "Own certificates" is suggested (16), that is OK. Click the "Next" button (17).

The data has been determined. Click on "Finish" (18).

The certificate was successfully imported. Click on "OK" (19).

The certificate is now stored in the Windows certificate store (20). Close the dialogue by clicking on the "Close" button (21).

The "Settings" tab can also be closed (22).

Calling the page (with installed certificate)

Now the page (in the example https://vc.edv-workshops.com) can be opened. The browser now suggests the installed client certificate (23).

Click on OK (24).

The certificate is checked by the server and the page is opened (in the example an installation of the web conference system BigBlueButton).

This concludes the workshop.