The browser window is opened and healthy, but Selenium is not able to start the session.

becauses though Firefox creates the neccessary files in the given directory, the the communication between selenium and firefox fails. I think this is correct, but now yet another problem. So I tried this: firefoxOptions.addArguments('-profile', '/tmp/my.profile') If I want to have an influence on the desired setting, I need to define a custom profile. Normally selenium creates a new temporary profile folder for each new browser instance. It is read in during the browser startup and first adapted on browser close. Am I wrong? But when I checked profile folders for differences I found out that there is a handlers.json that contains the settings from the picture above. Not with a single config you could possibly change this to 'Save File'. Before it was Preview in Firefox but it has to be Save File in order to reach my goal which is to immediately download the PDF without any questions. On the preferences page about:preferences under Applications I can see now that for the Content Type PDF document the Action was changed to nothing, which seems to be the same as Always ask. Selenium is not even aware of this popup. Ok anyway, I found a way to change this at runtime with selenium.īut now that the pdf viewer is skipped another popup is interrupting the download. Only when first changed at runtime, the pdf viewer is really disabled. Unless you change pdfjs.disabled to true at runtime within the about:config page.

Unfortunately with the used Firefox version this config has no effect. WebDriver webdriver = new FirefoxDriver(firefoxOptions) FirefoxProfile firefoxProfile = new FirefoxProfile() įtAcceptUntrustedCertificates(true) įtAssumeUntrustedCertificateIssuer(true) įtPreference('', 2) įtPreference('', 0) įtPreference('', true) įtPreference('', 'application/pdf') įtPreference('', 'application/pdf') įtPreference('', false) įtPreference('', false) įtPreference('', false) įtPreference('', false) įtPreference('', false) įtPreference('', false) įtPreference('', false) įtPreference('.', false) įtPreference('', false) įtPreference('pdfjs.disabled', true) įirefoxOptions firefoxOptions = new FirefoxOptions() įtProfile(firefoxProfile) The preference pdfjs.disabled should deactivate the viewer so created the driver instance with a profile (and also tried some more preferences). Instead of downloading the pdf, a built-in viewer will be opened. For example at this link there is a download button where I can let selenium perform a click on.

I face problems when it comes to an automated download of a PDF file with Firefox. I'm working on an upgrade of our internal Java Selenium framework to the latest version 3.14.0 in combination with Firefox 61.0 and Geckodriver 0.21.0.

Firefox download fail