http://bugs.winehq.org/show_bug.cgi?id=58421 --- Comment #4 from win.user <tst1(a)mixbox.pl> --- I tried everything you suggested and it seems that this (experimental) WoW64 mode is responsible for all those problems - with every Windows program (not just MT4) under wine-10.9. So under wine-10.9: "wineboot -u" generates errors and "winecfg" generates the same errors and neither MT4 nor any other Windows program is starting. After creating a new clean winprefix, there are still errors (although slightly different) and nothing starts up. All the errors generated by the individual attempts I posted below: https://pastebin.com/3RDNRnri Fortunately, wine-10.2-2 is working. -- Do not reply to this email, post in Bugzilla using the above URL to reply. You are receiving this mail because: You are watching all bug changes.