id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 11938,Failed to open a session for the virtual machine (3D-related),gkholman,,"I did a search and did not see anyone post this for V4.2.16. I am getting the following error for *every* attempt to restore a session saved by the ""Save the machine state"" action. This is for three different Windows virtual machines, and has been happening since at least V4.2.14. There were no problems in V4.1.18 and I didn't do an update between 4.1.18 and 4.2.14. There never is any error information. ===8<--- Failed to open a session for the virtual machine Windows Temp. No error info. Result Code: NS_ERROR_CALL_FAILED (0x800706BE) Component: ProgressProxy Interface: IProgress {c20238e4-3221-4d3f-8891-81ce92d9f913} ===8<--- I did see a post where someone first tried killing orphaned processes before trying a restore, and that did not work for me today. ",defect,new,other,VirtualBox 4.2.16,,"save, restore",,Windows,Mac OS X