I am using version 6.24.3 of jxbrowser, and there is a problem when accessing https://mail.163.com. I can confirm that there is no problem with the website. I have checked the official jxbrowser documentation, but there is no gain. I hope to get an answer here The following is the error message given by version 6.24.3 of jxbrowser；
This site can’t be reached The webpage at https://mail.163.com/ might be temporarily down or it may have moved permanently to a new web address. ERR_SPDY_INADEQUATE_TRANSPORT_SECURIT。 I want to confirm what causes this, and if there is a solution on this version? Exception screenshot
I suppose it's because of the old Chromium 69 used by JxBrowser 6.24.3. It's possible that the website doesn't work in such an old Chromium version. I can recommend that you try JxBrowser 7.11 based on Chromium 79 and see if it helps.