Name TTMODm07256nsSi4ap6QjLDmwznN0nGgGQJmkKkKDmewtKDmQ80ENo_1
Workunit 230510661
Created 26 Feb 2025, 7:15:47 UTC
Sent 26 Feb 2025, 7:15:52 UTC
Report deadline 6 Mar 2025, 7:15:52 UTC
Received 26 Feb 2025, 7:19:46 UTC
Server state Over
Outcome Computation error
Client state Compute error
Exit status 1 (0x00000001) Unknown error code
Computer ID 10699845
Run time 16 sec
CPU time
Validate state Invalid
Credit 0.00
Device peak FLOPS 31.43 GFLOPS
Application version ATLAS Simulation v3.01 (vbox64_mt_mcore_atlas)
windows_x86_64
Peak working set size 7.97 MB
Peak swap size 2.04 MB
Peak disk usage 327.05 MB

Stderr output

<core_client_version>7.24.1</core_client_version>
<![CDATA[
<message>
Unzul�ssige Funktion.
 (0x1) - exit code 1 (0x1)</message>
<stderr_txt>
2025-02-26 08:16:13 (4336): Detected: vboxwrapper 26206
2025-02-26 08:16:13 (4336): Detected: BOINC client v7.24.1
2025-02-26 08:16:14 (4336): Detected: VirtualBox VboxManage Interface (Version: 6.1.12)
2025-02-26 08:16:14 (4336): Successfully copied 'init_data.xml' to the shared directory.
2025-02-26 08:16:15 (4336): Create VM. (boinc_bb5443399628be66, slot#0)
2025-02-26 08:16:15 (4336): Setting Memory Size for VM. (4800MB)
2025-02-26 08:16:15 (4336): Setting CPU Count for VM. (8)
2025-02-26 08:16:16 (4336): Setting Chipset Options for VM.
2025-02-26 08:16:16 (4336): Setting Graphics Controller Options for VM.
2025-02-26 08:16:16 (4336): Setting Boot Options for VM.
2025-02-26 08:16:16 (4336): Setting Network Configuration for NAT.
2025-02-26 08:16:17 (4336): Enabling VM Network Access.
2025-02-26 08:16:17 (4336): Disabling USB Support for VM.
2025-02-26 08:16:17 (4336): Disabling COM Port Support for VM.
2025-02-26 08:16:17 (4336): Disabling LPT Port Support for VM.
2025-02-26 08:16:18 (4336): Disabling Audio Support for VM.
2025-02-26 08:16:18 (4336): Disabling Clipboard Support for VM.
2025-02-26 08:16:18 (4336): Disabling Drag and Drop Support for VM.
2025-02-26 08:16:19 (4336): Adding storage controller(s) to VM.
2025-02-26 08:16:19 (4336): Adding virtual disk drive to VM. (ATLAS_vbox_3.01_image.vdi)
2025-02-26 08:16:20 (4336): Adding VirtualBox Guest Additions to VM.
2025-02-26 08:16:20 (4336): Adding network bandwidth throttle group to VM. (Defaulting to 1024GB)
2025-02-26 08:16:20 (4336): forwarding host port 56857 to guest port 80
2025-02-26 08:16:21 (4336): Enabling remote desktop for VM.
2025-02-26 08:16:21 (4336): Required extension pack not installed, remote desktop not enabled.
2025-02-26 08:16:21 (4336): Enabling shared directory for VM.
2025-02-26 08:16:21 (4336): Starting VM using VBoxManage interface. (boinc_bb5443399628be66, slot#0)
2025-02-26 08:16:22 (4336): Error in start VM for VM: 1
Command:
VBoxManage -q startvm "boinc_bb5443399628be66" --type headless
Output:
Waiting for VM "boinc_bb5443399628be66" to power on...
VBoxManage.exe: error: The virtual machine 'boinc_bb5443399628be66' has terminated unexpectedly during startup with exit code 1 (0x1).  More details may be available in 'C:\ProgramData\BOINC\slots\0\boinc_bb5443399628be66\Logs\VBoxHardening.log'
VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component MachineWrap, interface IMachine

2025-02-26 08:16:22 (4336): VM failed to start.
2025-02-26 08:16:22 (4336): Could not start 
2025-02-26 08:16:22 (4336): ERROR: VM failed to start
2025-02-26 08:16:22 (4336): Powering off VM.
2025-02-26 08:16:22 (4336): Deregistering VM. (boinc_bb5443399628be66, slot#0)
2025-02-26 08:16:22 (4336): Removing network bandwidth throttle group from VM.
2025-02-26 08:16:22 (4336): Removing VM from VirtualBox.

    Hypervisor System Log:

00:00:08.963446          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963451          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963456          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963461          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963467          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963472          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963477          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963483          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963488          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963493          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963500          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963506          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963511          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963516          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963521          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963527          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963532          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963537          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963542          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963547          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963552          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963557          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963563          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963568          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963573          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963578          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963584          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963589          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963594          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963601          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963607          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963612          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963618          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963623          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963628          ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={85632c68-b5bb-4316-a900-5eb28d3413df} aComponent={MachineWrap} aText={The object functionality is limited}, preserve=false aResultDetail=0
00:00:08.963743          Saving settings file "C:\Users\Ole\.VirtualBox\VirtualBox.xml" with version "1.12-windows"
00:00:13.978460 main     VirtualBox: object deletion starts
00:00:13.979459 main     HostDnsMonitor: shutting down ...
00:00:13.979534 main     HostDnsMonitor: shut down
00:00:13.981970 Watcher  ERROR [COM]: aRC=E_ACCESSDENIED (0x80070005) aIID={d0a0163f-e254-4e5b-a1f2-011cf991c38d} aComponent={VirtualBoxWrap} aText={The object is not ready}, preserve=false aResultDetail=0
00:00:13.982200 main     VirtualBox: object deleted

    VM Execution Log:


    VM Startup Log:


    VM Trace Log:

essor online core count: 8
Processor core count: 8
Processor supports HW virtualization: yes
Processor supports PAE: yes
Processor supports long mode: yes
Processor supports nested paging: yes
Processor supports unrestricted guest: yes
Processor supports nested HW virtualization: yes
Processor#0 speed: unknown
Processor#0 description: AMD Ryzen 7 4700U with Radeon Graphics
Processor#1 speed: unknown
Processor#1 description: AMD Ryzen 7 4700U with Radeon Graphics
Processor#2 speed: unknown
Processor#2 description: AMD Ryzen 7 4700U with Radeon Graphics
Processor#3 speed: unknown
Processor#3 description: AMD Ryzen 7 4700U with Radeon Graphics
Processor#4 speed: unknown
Processor#4 description: AMD Ryzen 7 4700U with Radeon Graphics
Processor#5 speed: unknown
Processor#5 description: AMD Ryzen 7 4700U with Radeon Graphics
Processor#6 speed: unknown
Processor#6 description: AMD Ryzen 7 4700U with Radeon Graphics
Processor#7 speed: unknown
Processor#7 description: AMD Ryzen 7 4700U with Radeon Graphics
Memory size: 14205 MByte
Memory available: 7413 MByte
Operating system: Windows 10
Operating system version: 10.0.26100

2025-02-26 08:16:14 (4336): 
Command: VBoxManage -q showvminfo "boinc_bb5443399628be66" --machinereadable 
Exit Code: -2135228415
Output:
VBoxManage.exe: error: Could not find a registered machine named 'boinc_bb5443399628be66'
VBoxManage.exe: error: Details: code VBOX_E_OBJECT_NOT_FOUND (0x80bb0001), component VirtualBoxWrap, interface IVirtualBox, callee IUnknown
VBoxManage.exe: error: Context: "FindMachine(Bstr(VMNameOrUuid).raw(), machine.asOutParam())" at line 2715 of file VBoxManageInfo.cpp

2025-02-26 08:16:15 (4336): 
Command: VBoxManage -q showhdinfo "C:\ProgramData\BOINC\slots\0/vm_image.vdi" 
Exit Code: -2135228412
Output:
VBoxManage.exe: error: Could not find file for the medium 'C:\ProgramData\BOINC\slots\0\vm_image.vdi' (VERR_FILE_NOT_FOUND)
VBoxManage.exe: error: Details: code VBOX_E_FILE_ERROR (0x80bb0004), component MediumWrap, interface IMedium, callee IUnknown
VBoxManage.exe: error: Context: "OpenMedium(Bstr(pszFilenameOrUuid).raw(), enmDevType, enmAccessMode, fForceNewUuidOnOpen, pMedium.asOutParam())" at line 191 of file VBoxManageDisk.cpp

2025-02-26 08:16:15 (4336): 
Command: VBoxManage -q createvm --name "boinc_bb5443399628be66" --basefolder "C:\ProgramData\BOINC\slots\0" --ostype "Linux26_64" --register
Exit Code: 0
Output:
Virtual machine 'boinc_bb5443399628be66' is created and registered.
UUID: 73fe7ce7-3a81-4527-958b-0a8fcacc0112
Settings file: 'C:\ProgramData\BOINC\slots\0\boinc_bb5443399628be66\boinc_bb5443399628be66.vbox'

2025-02-26 08:16:15 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --description "TTMODm07256nsSi4ap6QjLDmwznN0nGgGQJmkKkKDmewtKDmQ80ENo_1" 
Exit Code: 0
Output:

2025-02-26 08:16:15 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --memory 4800 
Exit Code: 0
Output:

2025-02-26 08:16:16 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --cpus 8 
Exit Code: 0
Output:

2025-02-26 08:16:16 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --acpi on --ioapic on --rtcuseutc off 
Exit Code: 0
Output:

2025-02-26 08:16:16 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --vram 16 --graphicscontroller VBoxVGA 
Exit Code: 0
Output:

2025-02-26 08:16:16 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --boot1 disk --boot2 dvd --boot3 none --boot4 none 
Exit Code: 0
Output:

2025-02-26 08:16:17 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --nic1 nat --natdnsproxy1 on --cableconnected1 off 
Exit Code: 0
Output:

2025-02-26 08:16:17 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --cableconnected1 on 
Exit Code: 0
Output:

2025-02-26 08:16:17 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --usb off 
Exit Code: 0
Output:

2025-02-26 08:16:17 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --uart1 off --uart2 off 
Exit Code: 0
Output:

2025-02-26 08:16:18 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --lpt1 off --lpt2 off 
Exit Code: 0
Output:

2025-02-26 08:16:18 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --audio none 
Exit Code: 0
Output:

2025-02-26 08:16:18 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --clipboard disabled 
Exit Code: 0
Output:

2025-02-26 08:16:19 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --draganddrop disabled 
Exit Code: 0
Output:

2025-02-26 08:16:19 (4336): 
Command: VBoxManage -q storagectl "boinc_bb5443399628be66" --name "Hard Disk Controller" --add "sata" --controller "IntelAHCI" --hostiocache off --portcount 3
Exit Code: 0
Output:

2025-02-26 08:16:19 (4336): 
Command: VBoxManage -q showhdinfo "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/ATLAS_vbox_3.01_image.vdi" 
Exit Code: 0
Output:
UUID:           ba4f7346-8ee8-4da6-a071-5ab41c7f9cb8
Parent UUID:    base
State:          created
Type:           normal (base)
Location:       C:\ProgramData\BOINC\projects\lhcathome.cern.ch_lhcathome\ATLAS_vbox_3.01_image.vdi
Storage format: VDI
Format variant: dynamic default
Capacity:       20480 MBytes
Size on disk:   4204 MBytes
Encryption:     disabled
Property:       AllocationBlockSize=1048576

2025-02-26 08:16:19 (4336): 
Command: VBoxManage -q storageattach "boinc_bb5443399628be66" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --medium "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/ATLAS_vbox_3.01_image.vdi" 
Exit Code: 0
Output:

2025-02-26 08:16:20 (4336): 
Command: VBoxManage -q storageattach "boinc_bb5443399628be66" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --medium none 
Exit Code: 0
Output:

2025-02-26 08:16:20 (4336): 
Command: VBoxManage -q storageattach "boinc_bb5443399628be66" --storagectl "Hard Disk Controller" --port 0 --device 0 --type hdd --mtype multiattach --medium "C:\ProgramData\BOINC/projects/lhcathome.cern.ch_lhcathome/ATLAS_vbox_3.01_image.vdi" 
Exit Code: 0
Output:

2025-02-26 08:16:20 (4336): 
Command: VBoxManage -q storageattach "boinc_bb5443399628be66" --storagectl "Hard Disk Controller" --port 1 --device 0 --type dvddrive --medium "C:\Program Files\Oracle\VirtualBox/VBoxGuestAdditions.iso" 
Exit Code: 0
Output:

2025-02-26 08:16:20 (4336): 
Command: VBoxManage -q bandwidthctl "boinc_bb5443399628be66" add "boinc_bb5443399628be66_net" --type network --limit 1024G 
Exit Code: 0
Output:

2025-02-26 08:16:21 (4336): 
Command: VBoxManage -q modifyvm "boinc_bb5443399628be66" --natpf1 ",tcp,127.0.0.1,56857,,80" 
Exit Code: 0
Output:

2025-02-26 08:16:21 (4336): 
Command: VBoxManage -q list extpacks
Exit Code: 0
Output:
Extension Packs: 0

2025-02-26 08:16:21 (4336): 
Command: VBoxManage -q sharedfolder add "boinc_bb5443399628be66" --name "shared" --hostpath "C:\ProgramData\BOINC\slots\0/shared"
Exit Code: 0
Output:

2025-02-26 08:16:22 (4336): 
Command: VBoxManage -q startvm "boinc_bb5443399628be66" --type headless
Exit Code: 1
Output:
Waiting for VM "boinc_bb5443399628be66" to power on...
VBoxManage.exe: error: The virtual machine 'boinc_bb5443399628be66' has terminated unexpectedly during startup with exit code 1 (0x1).  More details may be available in 'C:\ProgramData\BOINC\slots\0\boinc_bb5443399628be66\Logs\VBoxHardening.log'
VBoxManage.exe: error: Details: code E_FAIL (0x80004005), component MachineWrap, interface IMachine

2025-02-26 08:16:22 (4336): 
Command: VBoxManage -q snapshot "boinc_bb5443399628be66" list 
Exit Code: -108
Output:
This machine does not have any snapshots

2025-02-26 08:16:22 (4336): 
Command: VBoxManage -q bandwidthctl "boinc_bb5443399628be66" remove "boinc_bb5443399628be66_net" 
Exit Code: 0
Output:

2025-02-26 08:16:22 (4336): 
Command: VBoxManage -q unregistervm "boinc_bb5443399628be66" --delete 
Exit Code: 0
Output:
0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%

08:16:28 (4336): called boinc_finish(1)

</stderr_txt>
]]>


©2025 CERN