IDM has an automatic update option, and IDM can check for the availability of a new version once per week. Once a new version becomes available, IDM will show a dialog that describes all new features and suggests updating your current version. You may also check for updates manually at any time using "Help→Check for updates..." IDM main menu item.
What's new in version 6.40 Build 2(Released: Dec 09, 2021)
Fixed several bugs in download engine
Fixed bugs with custom fonts.
Fixed a problem when using a large font on low screen resolution, IDM dialogs and fonts do not increase over screen size now.
Fixed problems with not fitting button names in IDM Options and in IDM Scheduler when fonts with wide metrics are used.
Fixed problems with cutting tabs on download progress dialog.
Fixed other minor bugs with custom fonts
What's new in version 6.40(Released: Nov 29, 2021)
Improved download engine. Increased download speed for several web sites
Fixed timeout problems and other errors when establishing connection with some web sites
Added support for "Make text bigger" feature in Windows 10/11 accessibility settings. IDM will change the font size now
Added the selection of font for IDM interface to "View→Fonts" menu item of main IDM window
Improved the processing of capturing downloads from the web sites that don't allow making second http request
Fixed others bugs
What's new in version 6.39 Build 8(Released: Oct 29, 2021)
Fixed "403 Forbidden" downloading problem for some web sites
Fixed bugs
What's new in version 6.39 Build 7(Released: Oct 22, 2021)
Fixed a bug when assembling several types of MKV videos
Fixed other minor bugs
What's new in version 6.39 Build 5(Released: Oct 19, 2021)
Fixed a bug with selected group downloads from the browser
Fixed problems with some types of large files
What's new in version 6.39 Build 3(Released: Oct 15, 2021)
Increased download speed for several web sites
Resolved problems with https downloading for some users
Improved video recognition for some web sites
Fixed problems with downloading for several types of video streams
Fixed bugs
What's new in version 6.39 Build 2(Released: Jul 16, 2021)
Added search in an old way in full IDM list (F3) when closing the SearchBar
Fixed a bug with adding downloads from the command line
What's new in version 6.39(Released: Jul 14, 2021)
Changed the search dialog (Ctrl-F) and added SearchBar
Fixed a problem with searching Unicode strings
Added the ability to show "Parent web page" column to the list of downloads of the main dialog
Fixed problems with downloading from several sites
Fixed bugs
What's new in version 6.38 Build 25(Released: May 10, 2021)
Improved download engine
Fixed bugs
What's new in version 6.38 Build 23(Released: May 05, 2021)
Resolved browser integration problems some versions of Windows 10
Added support for new types of video streams
Fixed bugs
What's new in version 6.38 Build 22(Released: Apr 30, 2021)
Fixed problems with downloading for several types of video streams
Fixed bugs
What's new in version 6.38 Build 21(Released: Apr 17, 2021)
Improved browsers integration
Fixed problems with downloading from several sites
Fixed IDMMsgHost.exe crashes
Fixed bugs
What's new in version 6.38 Build 18(Released: Mar 03, 2021)
Fixed problems with downloading for several types of video streams
Improved the interception of downloads
Fixed bugs
What's new in version 6.38 Build 17(Released: Feb 12, 2021)
Improved download engine
Fixed bugs
What's new in version 6.38 Build 16(Released: Dec 25, 2020)
Added support for new types of video streams
Fixed bugs
What's new in version 6.38 Build 15(Released: Dec 10, 2020)
Fixed a critical bug
What's new in version 6.38 Build 14(Released: Nov 25, 2020)
Fixed problems with downloading for several types of video streams
Fixed the problem with the pale drawing of the download panel in FireFox 83 on Windows 7
What's new in version 6.38 Build 12(Released: Nov 17, 2020)
Improved the interception of downloads on some sites
Improved downloading files intercepted from Chrome based browsers
What's new in version 6.38 Build 11(Released: Nov 14, 2020)
Improved download engine
Fixed handling of HTTP status "308 Permanent Redirect"
