Giusi wrote:could you post a vboxsvc.log ?
[[[ some characters replaced ]]]
VirtualBox COM Server 5,0,3 r102322 win,amd64 (Aug 25 2015 00:49:54) release log
00:00:00,000000 main Log opened 2015-08-26T12:35:06,249673500Z
00:00:00,000000 main Build Type: release
00:00:00,000000 main OS Product: Windows 8
00:00:00,000000 main OS Release: 6,2,9200
00:00:00,000000 main OS Service Pack:
00:00:00,062536 main DMI Product Name: 20378
00:00:00,078125 main DMI Product Version: Lenovo Y50-70
00:00:00,078125 main Host RAM: 8104MB total, 5530MB available
00:00:00,078125 main Executable: C:'Program Files'Oracle'VirtualBox'VBoxSVC,exe
00:00:00,078125 main Process ID: 8128
00:00:00,078125 main Package type: WINDOWS_64BITS_GENERIC
00:00:00,078125 Home directory: 'C:'Users'root/,VirtualBox'
00:00:00,078125 Loading settings file "C:'Users'root/,VirtualBox'VirtualBox,xml" with version "1,14-windows"
00:00:00,078125 Getting USB descriptor failed with error 31
00:00:00,078125 Getting USB descriptor failed with error 31
00:00:00,211514 USB: Unknown USB device detected ( idVendor: 0x0000, idProduct: 0x0000 ), Please, report the idVendor and idProduct to vbox,org,
00:00:00,211514 USB: Unknown USB device detected ( idVendor: 0x0000, idProduct: 0x0000 ), Please, report the idVendor and idProduct to vbox,org,
00:00:00,211514 NetIfList: building the list of interfaces
00:00:00,242937 NetIfList: fetched INetCfgBindingPath interface
00:00:00,242937 NetIfList: fetched INetCfgBindingInterface interface
00:00:00,242937 NetIfList: got Microsoft Wi-Fi Direct Virtual Adapter
00:00:00,242937 NetIfList: failed to get device status (0x8004a027)
00:00:00,242937 NetIfList: fetched INetCfgBindingPath interface
00:00:00,242937 NetIfList: fetched INetCfgBindingInterface interface
00:00:00,242937 NetIfList: got Intel(R) Dual Band Wireless-AC 3160
00:00:00,242937 NetIfList: fetched network adapter id: pci'ven_8086&dev_08b4&subsys_82708086
00:00:00,274146 vboxNetWinAddComponent: adding Intel(R) Dual Band Wireless-AC 3160
00:00:00,274146 NetIfList: fetched INetCfgBindingPath interface
00:00:00,274146 NetIfList: fetched INetCfgBindingInterface interface
00:00:00,274146 NetIfList: got Realtek PCIe GBE Family Controller
00:00:00,274146 NetIfList: fetched network adapter id: pci'ven_10ec&dev_8168&subsys_380d17aa&rev_10
00:00:00,293986 vboxNetWinAddComponent: adding Realtek PCIe GBE Family Controller
00:00:00,294486 NetIfList: fetched INetCfgBindingPath interface
00:00:00,294486 NetIfList: fetched INetCfgBindingInterface interface
00:00:00,294486 NetIfList: got Microsoft Kernel Debug Network Adapter
00:00:00,294486 NetIfList: fetched network adapter id: root'kdnic
00:00:00,311982 vboxNetWinAddComponent: adding Microsoft Kernel Debug Network Adapter
00:00:00,311982 NetIfList: fetched INetCfgBindingPath interface
00:00:00,311982 NetIfList: fetched INetCfgBindingInterface interface
00:00:00,311982 NetIfList: got Microsoft Wi-Fi Direct Virtual Adapter #2
00:00:00,312482 NetIfList: fetched network adapter id: {5d624f94-8850-40c3-a3fa-a4fd2080baf3}'vwifimp_wfd
00:00:00,329210 vboxNetWinAddComponent: adding Microsoft Wi-Fi Direct Virtual Adapter #2
00:00:00,329210 NetIfList: fetched INetCfgBindingPath interface
00:00:00,329210 NetIfList: fetched INetCfgBindingInterface interface
00:00:00,329210 NetIfList: got Microsoft Hosted Network Virtual Adapter
00:00:00,329210 NetIfList: fetched network adapter id: {5d624f94-8850-40c3-a3fa-a4fd2080baf3}'vwifimp_sap
00:00:00,347143 vboxNetWinAddComponent: adding Microsoft Hosted Network Virtual Adapter
00:00:00,347143 NetIfList: fetched INetCfgBindingPath interface
00:00:00,347143 NetIfList: fetched INetCfgBindingInterface interface
00:00:00,347625 NetIfList: got VirtualBox Host-Only Ethernet Adapter
00:00:00,347903 NetIfList: fetched network adapter id: sun_vboxnetadp
00:00:00,356427 netIfListHostAdapters: Microsoft ISATAP Adapter #4
00:00:00,356427 netIfListHostAdapters: id = *isatap
00:00:00,356427 netIfListHostAdapters: Intel(R) Dual Band Wireless-AC 3160
00:00:00,356427 netIfListHostAdapters: id = pci'ven_8086&dev_08b4&subsys_82708086
00:00:00,356427 netIfListHostAdapters: Microsoft ISATAP Adapter
00:00:00,356427 netIfListHostAdapters: failed to get device status (0x8004a027)
00:00:00,356927 netIfListHostAdapters: Microsoft ISATAP Adapter #3
00:00:00,356927 netIfListHostAdapters: id = *isatap
00:00:00,356927 netIfListHostAdapters: Bluetooth Device (Personal Area Network)
00:00:00,356927 netIfListHostAdapters: failed to get device status (0x8004a027)
00:00:00,356927 netIfListHostAdapters: Microsoft Teredo Tunneling Adapter
00:00:00,356927 netIfListHostAdapters: id = *teredo
00:00:00,356927 netIfListHostAdapters: Microsoft Kernel Debug Network Adapter
00:00:00,357428 netIfListHostAdapters: id = root'kdnic
00:00:00,357428 netIfListHostAdapters: VirtualBox Host-Only Ethernet Adapter
00:00:00,357428 netIfListHostAdapters: id = sun_vboxnetadp
00:00:00,375038 vboxNetWinAddComponent: adding VirtualBox Host-Only Ethernet Adapter
00:00:00,375551 netIfListHostAdapters: Microsoft Wi-Fi Direct Virtual Adapter #2
00:00:00,375551 netIfListHostAdapters: id = {5d624f94-8850-40c3-a3fa-a4fd2080baf3}'vwifimp_wfd
00:00:00,375551 netIfListHostAdapters: Microsoft Hosted Network Virtual Adapter
00:00:00,375551 netIfListHostAdapters: id = {5d624f94-8850-40c3-a3fa-a4fd2080baf3}'vwifimp_sap
00:00:00,376054 netIfListHostAdapters: Realtek PCIe GBE Family Controller
00:00:00,376054 netIfListHostAdapters: id = pci'ven_10ec&dev_8168&subsys_380d17aa&rev_10
00:00:00,376054 netIfListHostAdapters: Microsoft Wi-Fi Direct Virtual Adapter
00:00:00,376054 netIfListHostAdapters: failed to get device status (0x8004a027)
00:00:00,376054 netIfListHostAdapters: Microsoft ISATAP Adapter #2
00:00:00,376054 netIfListHostAdapters: failed to get device status (0x8004a027)
00:00:00,376054 netIfListHostAdapters: Bluetooth Device (RFCOMM Protocol TDI)
00:00:00,376054 netIfListHostAdapters: failed to get device status (0x8004a027)
00:00:00,377072 HostDnsMonitor: old information
00:00:00,377072 no server entries
00:00:00,377072 no search string entries
00:00:00,377072 no domain set
00:00:00,377072 HostDnsMonitor: new information
00:00:00,377072 server 1: 8,8,8,8
00:00:00,377072 server 2: 8,8,4,4
00:00:00,377072 no search string entries
00:00:00,377072 no domain set
00:00:00,377072 HostDnsMonitorProxy::notify
00:00:00,486491 VD: VDInit finished
00:00:00,486491 Loading settings file "C:'DATI'VirtualBoxMachines'XP_8'XP_8,vbox" with version "1,14-windows"
00:00:00,509263 Loading settings file "C:'DATI'VirtualBoxMachines'Server W2008 web'Server W2008 web,vbox" with version "1,14-windows"
00:00:01,147944 ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={4afe423b-43e0-e9d0-82e8-ceb307940dda} aComponent={MediumWrap} aText={Unknown exception
00:00:01,147944 F:'tinderbox'win-5,0'out'win,amd64'release'obj'VBoxAPIWrap'MediumWrap,cpp[2245] (long __cdecl MediumWrap::GetEncryptionSettings(unsigned short **,unsigned short **))}, preserve=false aResultDetail=0
00:00:01,147944 ERROR [COM]: aRC=E_FAIL (0x80004005) aIID={4afe423b-43e0-e9d0-82e8-ceb307940dda} aComponent={MediumWrap} aText={Unknown exception
00:00:01,147944 F:'tinderbox'win-5,0'out'win,amd64'release'obj'VBoxAPIWrap'MediumWrap,cpp[2245] (long __cdecl MediumWrap::GetEncryptionSettings(unsigned short **,unsigned short **))}, preserve=false aResultDetail=0
00:00:11,275211 main ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={4afe423b-43e0-e9d0-82e8-ceb307940dda} aComponent={MediumWrap} aText={Medium 'C:'DATI'VirtualBoxMachines'XP_8'XP_8-disk1,vmdk' cannot be closed because it is still attached to 1 virtual machines}, preserve=false aResultDetail=0
00:00:11,275211 main ERROR [COM]: aRC=VBOX_E_OBJECT_IN_USE (0x80bb000c) aIID={4afe423b-43e0-e9d0-82e8-ceb307940dda} aComponent={MediumWrap} aText={Medium 'C:'DATI'VirtualBoxMachines'Server W2008 web'Server W2008,vdi' cannot be closed because it is still attached to 1 virtual machines}, preserve=false aResultDetail=0
00:00:11,275211 Watcher ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={0169423f-46b4-cde9-91af-1e9d5b6cd945} aComponent={VirtualBoxWrap} aText={The object is not ready}, preserve=false aResultDetail=0