A friend just sent me this screenshot, showing the same thing happening in Internet Explorer. She says that if she just clicks "OK" without selecting a certificate (she doesn't have any), the site loads as normal.
GNU, what does "Zertificat einblenden" mean, and have you tried clicking it? (It looks like it's in right part of the alert for a "Don't Use a Certificate" button.)
A friend just sent me this screenshot, showing the same thing happening in Internet Explorer. She says that if she just clicks "OK" without selecting a certificate (she doesn't have any), the site loads as normal.
GNU, what does "Zertificat einblenden" mean, and have you tried clicking it? (It looks like it's in right part of the alert for a "Don't Use a Certificate" button.)