case "InternetExplorer":
                       return new RemoteWebDriver(uri, DesiredCapabilities.InternetExplorer());
                   case "Firefox":
                       FirefoxProfile profile = new FirefoxProfile();
                       profile.AcceptUntrustedCertificates = true;
                       profile.AssumeUntrustedCertificateIssuer = true;
                       DesiredCapabilities dc = DesiredCapabilities.Firefox();
                       dc.SetCapability(FirefoxDriver.ProfileCapabilityName, profile);
                       return new RemoteWebDriver(uri, dc);
                   case "Chrome":
                       return new RemoteWebDriver(uri, DesiredCapabilities.Chrome());

I am a C# programmer and i am using Selenium to test web applications. With the newest updates, firefox is not able to assume untrusted certificate issuer. Firefox does not work regardless, it does not matter what i am trying to do. I am testing on a seperated server via RemoteWebriver. Chrome and internet explorer work fine. Here is a little snippet of my actual code [...] var uri = new Uri($"http://{ServerProperties.Address}:4444/wd/hub"); [...] case "InternetExplorer": return new RemoteWebDriver(uri, DesiredCapabilities.InternetExplorer()); case "Firefox": FirefoxProfile profile = new FirefoxProfile(); profile.AcceptUntrustedCertificates = true; profile.AssumeUntrustedCertificateIssuer = true; DesiredCapabilities dc = DesiredCapabilities.Firefox(); dc.SetCapability(FirefoxDriver.ProfileCapabilityName, profile); return new RemoteWebDriver(uri, dc); case "Chrome": return new RemoteWebDriver(uri, DesiredCapabilities.Chrome()); [...] Thanks for your help