Version 4.00 doesn't really mark any significant changes but the previous version which was 3.99 could only be logically followed by incrementing the major number.
Version 4.40 brought in the first native 64 bit release which improved the performance of loading large images (more than 25 megapixels).
What does not
What was not tested
Make sure you put the mfc42.dll file in the proper directory before you attempt to install. It seems to work best if you download the driver from microsoft.com or pull it from an existing Windows installation, rather than downloading the driver from various driver repository sites, as they have have a tendency to be either corrupt or outdated.
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Show||Fedora 33 x86_64||Nov 29 2020||5.22||Yes||Yes||No||Platinum||Artem S. Tashkinov|
|Show||openSUSE Leap 42.2 x86_64||Mar 27 2018||3.4||Yes||Yes||Yes||Silver||Rosanne|
|Show||Manjaro Linux||Sep 06 2016||1.9.17||Yes||Yes||Silver||Muttley|
|Show||Fedora 23 x86_64||Jul 14 2016||1.9.12||Yes||Yes||Silver||Richard Hollins|
|Show||Ubuntu 16.04 "Xenial" amd64 (+ variants like Kubuntu)||May 12 2016||1.9.9||Yes||Yes||Platinum||GP|
|Bug #||Description||Status||Resolution||Other apps affected|
|657||Many games and applications need 'mfc42.dll' ('winetricks -q mfc42' is a workaround)||NEW||View|
|4123||Picasa: "Open with..." menu item grayed out.||NEW||View|
|6682||IrfanView's 4.44 Help -> About window is missing a picture on the left||REOPENED||View|
|9404||cannot select TWAIN source in irfanview||NEW||View|
|9408||Irfanview cannot scan images||ASSIGNED||View|
|19496||Irfanview reports "Invalid MCI Device ID"||NEW||View|
|25166||Multiple mime type handling registered for different file extensions||NEW||View|
|33978||Bug in converting/rendering Windows Metafile (SetWinMetaFileBits etc.)||UNCONFIRMED||View|
|40119||Irfanview 4.x: selection cursor is not correctly aligned||UNCONFIRMED||View|
|42171||IrfanView's 4.44 Help -> About window has wrong placement for textboxes||NEW||View|
|50884||IrfanView WebP plugin edit fields don't accept values above 99||UNCONFIRMED||View|