id summary reporter owner description type status component version resolution keywords cc guest host 12943 VMM Device not compatible to Win 7 Mick_Dundee "Win7's problem taskbar info shows the information ""Herunterladen von Updates zum Beheben eines Problems bei Virtualbox VMM Device"" (see screenshot). The links directs to ""Systemsteuerung\Alle Systemsteuerungselemente\Wartungscenter\Meldungsdetails"" (subpart of Win system control). There you can make this download: http://dlc.sun.com.edgesuite.net/virtualbox/3.1.2/VirtualBox-3.1.2-56127-Win.exe Maybe this problem refers to this bug: https://www.virtualbox.org/ticket/4841. Sounds at least similar! There is no crash so i don't add any dump or log." defect closed VMM VirtualBox 4.3.10 wontfix Win 7, VMM Windows Linux