v83.4.20

July 02, 2020, CEF 83.4.2+gc8d4f85+chromium-83.0.4103.106 / Chromium 83.0.4103.106

CEF now supports the Chromium Network Service which brings a huge number of breaking API changes, please make sure you read #2743 for details if you are upgrading from a version prior to 75.1.x.

Visual C++ 2015 is required, see Notes below for more information

Change Log

For a complete list of changes see the 83.4.x Milestone.

Notes

• CefSharp requires Visual C++ 2015. See #1983 for details. You can bin deploy the VC++ dependencies, read the FAQ for more details.
• Chromium has removed support for Windows XP, Windows Vista, Windows Server 2003 and Windows Server 2008. See https://chrome.googleblog.com/2015/11/updates-to-chrome-platform-support.html
• Starting in June 2019 Google will block logins from CEF based browsers to Google Services, this includes Gmail, Drive, Docs, see https://security.googleblog.com/2019/04/better-protection-against-man-in-middle.html?m=1 for further discussion see https://groups.google.com/a/chromium.org/d/msg/embedder-dev/STyM5ZNTHMM/POj1v_cqBgAJ
• Due to licensing issues default builds do not support proprietary codecs like H264/AAC, sites like Netflix/Twitter/Instagram/Facebook won't play video/audio. See #1479 for more info. MP3 audio is supported, MP4 video is not.
• Anyone new to CefSharp should read the General Usage Guide
• This project uses GitLink for better debugging, you can step directly into much of the project source directly from Visual Studio see #1680 for details on how to enable GitLink
• WPF now has touch support which is enabled by default. Support for Stylus is not enabled by default, see #228 (comment) for further details

Known Issues

• WPF there is some visible tearing/glitches on resize, GPU Compositing has been disabled by default as a workaround #3114
• WinForms when running on Windows 10 Anniversary pressing certain key combinations freezes the browser see #1822 The issue has been reported upstream, there are workarounds listed in #1822
• Save as PDF is not working when viewing PDF with Print Preview enabled see https://bitbucket.org/chromiumembedded/cef/issues/2867/save-as-pdf-is-not-working-in-pdf-viewer
• Clicking embedded link in PDF doesn't navigate see https://bitbucket.org/chromiumembedded/cef/issues/2851/clicking-an-embedded-link-within-pdf-does
• WPF/OffScreen transparent background not working https://bitbucket.org/chromiumembedded/cef/issues/2938/osr-transparent-background-broken-since
• WPF/OffScreen access violation when disposing of browser https://bitbucket.org/chromiumembedded/cef/issues/2919/osr-closebrowser-accessviolation
• WPF touch scroll aborted if browser navigates within document https://bitbucket.org/chromiumembedded/cef/issues/2936/osr-touch-scrolling-initiated-by-touch
• Fonts incorrectly loaded on Win7 see https://bitbucket.org/chromiumembedded/cef/issues/2858/fonts-not-loading-look-wrong-on-windows-7
• window.focus() does not bring popup window to front see https://bitbucket.org/chromiumembedded/cef/issues/2931/windowfocus-does-not-bring-the-window-to
• OnProtocolExecution Page goes blank after link click see https://bitbucket.org/chromiumembedded/cef/issues/2715/onprotocolexecution-page-goes-blank-after
• Crash on Win10 when computer wakes from sleep see https://bitbucket.org/chromiumembedded/cef/issues/2924/crash-on-libcef-when-windows-10-wakes-from
• Background colour cannot be override for popups see https://bitbucket.org/chromiumembedded/cef/issues/2482/background_color-cannot-be-overridden-for
• WPF Browser goes blank if used in combination with TabControl see #2779
• CefSettings.IgnoreCertificateErrors no longer works, use the ignore-certificate-errors command line arg as a workaround or alternatively use OnCertificateError to selectively allow a certificate and/or display a dialog to your users see https://stackoverflow.com/a/35564187/852806 for an example.
• See https://github.com/cefsharp/CefSharp/issues?q=is%3Aissue+is%3Aopen+label%3Aknown-issue for other known issues

Breaking Changes

• For Network Service API changes see #2743
• All paths (CachePath, BrowserSubProcessPath, etc) must be absolute paths, if using a non-absolute path an exception will be throw. See #3102 for details.
• When using a RequestContext you must ensure that RequestContextSettings.CachePath is equal to or a child of CefSettings.RootCachePath See #3111 (comment) for details
• Adobe Flash is disabled by default, it can be re-enabled if required #3048
  (Flash support is scheduled to be removed from Chromium)
• Migrating from ResourceHandler.GetMimeType to Cef.GetMimeType for mimeType mapping see #3041
• See also https://github.com/cefsharp/CefSharp/issues?q=is%3Aissue+label%3Abreaking-change+milestone%3A83.3.x+is%3Aclosed