@kagbasi-ngc HP DL360 G9 and newer will work...

@Danp I have also seen this problem with XO, but currently do not have an example to test. This was an issue on both local SR and shared SR on NFS.

@dcskinner The correct link is: xcp-ng-8.3.0-20250606.2.iso

@olivierlambert The December 2025 blog post has the wrong link...

@ditzy-olive You can not join a new XCP 8.3 host to an existing 8.2 pool.

You can setup your new host as 8.2 and join it to the 8.2 pool and then upgrade everything to 8.3 using the correct procedure.... Or as you stated. Add the new 8.3 host to the upgraded 8.3 pool.

@Pilow @olivierlambert I have the same issue with suspended VMs restarting without my request. It happens during some host upgrades/reboots or NFS storage reconnects.

@McHenry You can force halt the power state of each VM using vm-reset-powerstate. Then restart the VM on another host, assuming they have shared storage available on the other host.

@joeymorin That's correct. They need time to coalesce after snapshots change. Length of 1 is normal. They should clear up after a few minutes.

@olivierlambert More results:

xe host-call-plugin host-uuid=<UUID> plugin=ipmitool.py fn=get_all_sensors

HP DL360 G8:

[{"name": "UID Light", "value": "0x00", "event": "ok"}, {"name": "Sys. Health LED", "value": "no reading", "event": "ns"}, {"name": "01-Inlet Ambient", "value": "18 degrees C", "event": "ok"}, {"name": "02-CPU 1", "value": "40 degrees C", "event": "ok"}, {"name": "03-CPU 2", "value": "40 degrees C", "event": "ok"}, {"name": "04-P1 DIMM 1-6", "value": "27 degrees C", "event": "ok"}, {"name": "05-P1 DIMM 7-12", "value": "26 degrees C", "event": "ok"}, {"name": "06-P2 DIMM 1-6", "value": "29 degrees C", "event": "ok"}, {"name": "07-P2 DIMM 7-12", "value": "28 degrees C", "event": "ok"}, {"name": "08-P1 Mem Zone", "value": "27 degrees C", "event": "ok"}, {"name": "09-P1 Mem Zone", "value": "29 degrees C", "event": "ok"}, {"name": "10-P2 Mem Zone", "value": "29 degrees C", "event": "ok"}, {"name": "11-P2 Mem Zone", "value": "26 degrees C", "event": "ok"}, {"name": "12-HD Max", "value": "35 degrees C", "event": "ok"}, {"name": "13-Chipset 1", "value": "44 degrees C", "event": "ok"}, {"name": "14-Chipset1 Zone", "value": "32 degrees C", "event": "ok"}, {"name": "15-P/S 1 Inlet", "value": "27 degrees C", "event": "ok"}, {"name": "16-P/S 1 Zone", "value": "29 degrees C", "event": "ok"}, {"name": "17-P/S 2 Inlet", "value": "26 degrees C", "event": "ok"}, {"name": "18-P/S 2 Zone", "value": "28 degrees C", "event": "ok"}, {"name": "19-PCI #1", "value": "disabled", "event": "ns"}, {"name": "20-PCI #2", "value": "disabled", "event": "ns"}, {"name": "21-VR P1", "value": "27 degrees C", "event": "ok"}, {"name": "22-VR P2", "value": "31 degrees C", "event": "ok"}, {"name": "23-VR P1 Mem", "value": "24 degrees C", "event": "ok"}, {"name": "24-VR P1 Mem", "value": "23 degrees C", "event": "ok"}, {"name": "25-VR P2 Mem", "value": "26 degrees C", "event": "ok"}, {"name": "26-VR P2 Mem", "value": "25 degrees C", "event": "ok"}, {"name": "27-VR P1Mem Zone", "value": "23 degrees C", "event": "ok"}, {"name": "28-VR P1Mem Zone", "value": "22 degrees C", "event": "ok"}, {"name": "29-VR P2Mem Zone", "value": "26 degrees C", "event": "ok"}, {"name": "30-VR P2Mem Zone", "value": "24 degrees C", "event": "ok"}, {"name": "31-HD Controller", "value": "58 degrees C", "event": "ok"}, {"name": "32-HD Cntlr Zone", "value": "37 degrees C", "event": "ok"}, {"name": "33-PCI 1 Zone", "value": "31 degrees C", "event": "ok"}, {"name": "34-PCI 1 Zone", "value": "33 degrees C", "event": "ok"}, {"name": "35-LOM Card", "value": "53 degrees C", "event": "ok"}, {"name": "36-PCI 2 Zone", "value": "35 degrees C", "event": "ok"}, {"name": "37-System Board", "value": "33 degrees C", "event": "ok"}, {"name": "38-System Board", "value": "30 degrees C", "event": "ok"}, {"name": "39-Sys Exhaust", "value": "31 degrees C", "event": "ok"}, {"name": "40-Sys Exhaust", "value": "33 degrees C", "event": "ok"}, {"name": "41-Sys Exhaust", "value": "33 degrees C", "event": "ok"}, {"name": "42-SuperCAP Max", "value": "22 degrees C", "event": "ok"}, {"name": "Fan Block 1", "value": "39.20 percent", "event": "ok"}, {"name": "Fan Block 2", "value": "39.20 percent", "event": "ok"}, {"name": "Fan Block 3", "value": "39.20 percent", "event": "ok"}, {"name": "Fan Block 4", "value": "39.20 percent", "event": "ok"}, {"name": "Fan Block 5", "value": "39.20 percent", "event": "ok"}, {"name": "Fan Block 6", "value": "39.20 percent", "event": "ok"}, {"name": "Fan Block 7", "value": "39.20 percent", "event": "ok"}, {"name": "Fan Block 8", "value": "39.20 percent", "event": "ok"}, {"name": "Power Supply 1", "value": "45 Watts", "event": "ok"}, {"name": "Power Supply 2", "value": "50 Watts", "event": "ok"}, {"name": "Power Meter", "value": "128 Watts", "event": "ok"}, {"name": "Power Supplies", "value": "0x00", "event": "ok"}, {"name": "Fans", "value": "0x00", "event": "ok"}, {"name": "Memory", "value": "0x00", "event": "ok"}, {"name": "C1 P1I Bay 1", "value": "0x01", "event": "ok"}, {"name": "C1 P1I Bay 2", "value": "0x01", "event": "ok"}, {"name": "C1 P1I Bay 3", "value": "0x01", "event": "ok"}, {"name": "C1 P1I Bay 4", "value": "0x01", "event": "ok"}, {"name": "C1 P2I Bay 5", "value": "0x01", "event": "ok"}, {"name": "C1 P2I Bay 6", "value": "0x01", "event": "ok"}, {"name": "C1 P2I Bay 7", "value": "0x01", "event": "ok"}, {"name": "C1 P2I Bay 8", "value": "0x01", "event": "ok"}]

HP DL360 G9:

[{"name": "UID", "value": "0x01", "event": "ok"}, {"name": "Sys Health LED", "value": "0x00", "event": "ok"}, {"name": "01-Inlet Ambient", "value": "22 degrees C", "event": "ok"}, {"name": "02-CPU 1", "value": "40 degrees C", "event": "ok"}, {"name": "03-CPU 2", "value": "40 degrees C", "event": "ok"}, {"name": "04-P1 DIMM 1-6", "value": "disabled", "event": "ns"}, {"name": "05-P1 DIMM 7-12", "value": "31 degrees C", "event": "ok"}, {"name": "06-P2 DIMM 1-6", "value": "disabled", "event": "ns"}, {"name": "07-P2 DIMM 7-12", "value": "30 degrees C", "event": "ok"}, {"name": "08-HD Max", "value": "35 degrees C", "event": "ok"}, {"name": "09-Exp Bay Drive", "value": "disabled", "event": "ns"}, {"name": "10-Chipset", "value": "37 degrees C", "event": "ok"}, {"name": "11-PS 1 Inlet", "value": "32 degrees C", "event": "ok"}, {"name": "12-PS 2 Inlet", "value": "27 degrees C", "event": "ok"}, {"name": "13-VR P1", "value": "36 degrees C", "event": "ok"}, {"name": "14-VR P2", "value": "36 degrees C", "event": "ok"}, {"name": "15-VR P1 Mem", "value": "29 degrees C", "event": "ok"}, {"name": "16-VR P1 Mem", "value": "29 degrees C", "event": "ok"}, {"name": "17-VR P2 Mem", "value": "31 degrees C", "event": "ok"}, {"name": "18-VR P2 Mem", "value": "30 degrees C", "event": "ok"}, {"name": "19-PS 1 Internal", "value": "40 degrees C", "event": "ok"}, {"name": "20-PS 2 Internal", "value": "40 degrees C", "event": "ok"}, {"name": "21-PCI 1", "value": "disabled", "event": "ns"}, {"name": "22-PCI 2", "value": "disabled", "event": "ns"}, {"name": "23-PCI 3", "value": "disabled", "event": "ns"}, {"name": "24-HD Controller", "value": "53 degrees C", "event": "ok"}, {"name": "25-LOM Card", "value": "45 degrees C", "event": "ok"}, {"name": "26-LOM", "value": "disabled", "event": "ns"}, {"name": "27-Front Ambient", "value": "24 degrees C", "event": "ok"}, {"name": "28-P/S 2 Zone", "value": "29 degrees C", "event": "ok"}, {"name": "29-Battery Zone", "value": "29 degrees C", "event": "ok"}, {"name": "30-iLO Zone", "value": "35 degrees C", "event": "ok"}, {"name": "31-PCI 1 Zone", "value": "31 degrees C", "event": "ok"}, {"name": "32-PCI 2 Zone", "value": "30 degrees C", "event": "ok"}, {"name": "33-PCI 3 Zone", "value": "29 degrees C", "event": "ok"}, {"name": "34-HD Cntlr Zone", "value": "32 degrees C", "event": "ok"}, {"name": "35-I/O Zone", "value": "29 degrees C", "event": "ok"}, {"name": "36-Storage Batt", "value": "23 degrees C", "event": "ok"}, {"name": "37-Fuse", "value": "30 degrees C", "event": "ok"}, {"name": "Fan 1", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 1 DutyCycle", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 1 Presence", "value": "0x32", "event": "ok"}, {"name": "Fan 2", "value": "15.68 percent", "event": "ok"}, {"name": "Fan 2 DutyCycle", "value": "15.68 percent", "event": "ok"}, {"name": "Fan 2 Presence", "value": "0x28", "event": "ok"}, {"name": "Fan 3", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 3 DutyCycle", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 3 Presence", "value": "0x32", "event": "ok"}, {"name": "Fan 4", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 4 DutyCycle", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 4 Presence", "value": "0x32", "event": "ok"}, {"name": "Fan 5", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 5 DutyCycle", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 5 Presence", "value": "0x32", "event": "ok"}, {"name": "Fan 6", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 6 DutyCycle", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 6 Presence", "value": "0x32", "event": "ok"}, {"name": "Fan 7", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 7 DutyCycle", "value": "19.60 percent", "event": "ok"}, {"name": "Fan 7 Presence", "value": "0x32", "event": "ok"}, {"name": "Power Supply 1", "value": "50 Watts", "event": "ok"}, {"name": "PS 1 Output", "value": "50 Watts", "event": "ok"}, {"name": "PS 1 Presence", "value": "0x0a", "event": "ok"}, {"name": "Power Supply 2", "value": "55 Watts", "event": "ok"}, {"name": "PS 2 Output", "value": "55 Watts", "event": "ok"}, {"name": "PS 2 Presence", "value": "0x0b", "event": "ok"}, {"name": "Power Meter", "value": "110 Watts", "event": "ok"}, {"name": "PwrMeter Output", "value": "110 Watts", "event": "ok"}, {"name": "Power Supplies", "value": "0x00", "event": "ok"}, {"name": "Fans", "value": "0x00", "event": "ok"}, {"name": "Megacell Status", "value": "0x00", "event": "ok"}, {"name": "Memory Status", "value": "0x00", "event": "ok"}, {"name": "C1 P1I Bay 1", "value": "0x01", "event": "ok"}, {"name": "C1 P2I Bay 5", "value": "0x01", "event": "ok"}]

HP DL360 G10:

[{"name": "UID", "value": "0x00", "event": "ok"}, {"name": "SysHealth_Stat", "value": "0x00", "event": "ok"}, {"name": "01-Inlet Ambient", "value": "18 degrees C", "event": "ok"}, {"name": "02-CPU 1", "value": "40 degrees C", "event": "ok"}, {"name": "03-CPU 2", "value": "40 degrees C", "event": "ok"}, {"name": "04-P1 DIMM 1-6", "value": "28 degrees C", "event": "ok"}, {"name": "05-PMM 1-6", "value": "disabled", "event": "ns"}, {"name": "06-P1 DIMM 7-12", "value": "26 degrees C", "event": "ok"}, {"name": "07-PMM 7-12", "value": "disabled", "event": "ns"}, {"name": "08-P2 DIMM 1-6", "value": "26 degrees C", "event": "ok"}, {"name": "09-PMM 1-6", "value": "disabled", "event": "ns"}, {"name": "10-P2 DIMM 7-12", "value": "26 degrees C", "event": "ok"}, {"name": "11-PMM 7-12", "value": "disabled", "event": "ns"}, {"name": "12-HD Max", "value": "35 degrees C", "event": "ok"}, {"name": "13-Exp Bay Drive", "value": "disabled", "event": "ns"}, {"name": "14-Stor Batt 1", "value": "21 degrees C", "event": "ok"}, {"name": "15-Front Ambient", "value": "22 degrees C", "event": "ok"}, {"name": "16-VR P1", "value": "31 degrees C", "event": "ok"}, {"name": "17-VR P2", "value": "30 degrees C", "event": "ok"}, {"name": "18-VR P1 Mem 1", "value": "25 degrees C", "event": "ok"}, {"name": "19-VR P1 Mem 2", "value": "25 degrees C", "event": "ok"}, {"name": "20-VR P2 Mem 1", "value": "25 degrees C", "event": "ok"}, {"name": "21-VR P2 Mem 2", "value": "25 degrees C", "event": "ok"}, {"name": "22-Chipset", "value": "30 degrees C", "event": "ok"}, {"name": "23-BMC", "value": "66 degrees C", "event": "ok"}, {"name": "24-BMC Zone", "value": "35 degrees C", "event": "ok"}, {"name": "26-HD Cntlr Zone", "value": "27 degrees C", "event": "ok"}, {"name": "29-I/O Zone", "value": "26 degrees C", "event": "ok"}, {"name": "30-PCI 1", "value": "disabled", "event": "ns"}, {"name": "31-PCI 1 Zone", "value": "28 degrees C", "event": "ok"}, {"name": "32-PCI 2", "value": "disabled", "event": "ns"}, {"name": "33-PCI 2 Zone", "value": "28 degrees C", "event": "ok"}, {"name": "34-PCI 3", "value": "disabled", "event": "ns"}, {"name": "35-PCI 3 Zone", "value": "disabled", "event": "ns"}, {"name": "37-Rear HD Max", "value": "disabled", "event": "ns"}, {"name": "38-Battery Zone", "value": "29 degrees C", "event": "ok"}, {"name": "39-P/S 1 Inlet", "value": "28 degrees C", "event": "ok"}, {"name": "40-P/S 2 Inlet", "value": "29 degrees C", "event": "ok"}, {"name": "41-P/S 1", "value": "40 degrees C", "event": "ok"}, {"name": "42-P/S 2", "value": "40 degrees C", "event": "ok"}, {"name": "43-E-Fuse", "value": "22 degrees C", "event": "ok"}, {"name": "44-P/S 2 Zone", "value": "27 degrees C", "event": "ok"}, {"name": "49-CPU 1 PkgTmp", "value": "35 degrees C", "event": "ok"}, {"name": "50-CPU 2 PkgTmp", "value": "35 degrees C", "event": "ok"}, {"name": "61-AHCI HD Max", "value": "disabled", "event": "ns"}, {"name": "69-PCI 1 M2", "value": "disabled", "event": "ns"}, {"name": "70-PCI 1 M2 Zn", "value": "disabled", "event": "ns"}, {"name": "71-PCI 2 M2", "value": "disabled", "event": "ns"}, {"name": "72-PCI 2 M2 Zn", "value": "disabled", "event": "ns"}, {"name": "73-PCI 3 M2", "value": "disabled", "event": "ns"}, {"name": "74-PCI 3 M2 Zn", "value": "disabled", "event": "ns"}, {"name": "Fan 1", "value": "0x00", "event": "ok"}, {"name": "Fan 1 DutyCycle", "value": "23.52 percent", "event": "ok"}, {"name": "Fan 1 Presence", "value": "0x00", "event": "ok"}, {"name": "Fan 2", "value": "0x00", "event": "ok"}, {"name": "Fan 2 DutyCycle", "value": "23.52 percent", "event": "ok"}, {"name": "Fan 2 Presence", "value": "0x00", "event": "ok"}, {"name": "Fan 3", "value": "0x00", "event": "ok"}, {"name": "Fan 3 DutyCycle", "value": "23.52 percent", "event": "ok"}, {"name": "Fan 3 Presence", "value": "0x00", "event": "ok"}, {"name": "Fan 4", "value": "0x00", "event": "ok"}, {"name": "Fan 4 DutyCycle", "value": "23.52 percent", "event": "ok"}, {"name": "Fan 4 Presence", "value": "0x00", "event": "ok"}, {"name": "Fan 5", "value": "0x00", "event": "ok"}, {"name": "Fan 5 DutyCycle", "value": "23.52 percent", "event": "ok"}, {"name": "Fan 5 Presence", "value": "0x00", "event": "ok"}, {"name": "Fan 6", "value": "0x00", "event": "ok"}, {"name": "Fan 6 DutyCycle", "value": "23.52 percent", "event": "ok"}, {"name": "Fan 6 Presence", "value": "0x00", "event": "ok"}, {"name": "Fan 7", "value": "0x00", "event": "ok"}, {"name": "Fan 7 DutyCycle", "value": "23.52 percent", "event": "ok"}, {"name": "Fan 7 Presence", "value": "0x00", "event": "ok"}, {"name": "Power Supply 1", "value": "0x00", "event": "ok"}, {"name": "PS 1 Input", "value": "90 Watts", "event": "ok"}, {"name": "Power Supply 2", "value": "0x00", "event": "ok"}, {"name": "PS 2 Input", "value": "90 Watts", "event": "ok"}, {"name": "Power Meter", "value": "200 Watts", "event": "ok"}, {"name": "Fans", "value": "0x00", "event": "ok"}, {"name": "Power Supplies", "value": "0x00", "event": "ok"}, {"name": "Memory Status", "value": "0x00", "event": "ok"}, {"name": "Megacell Status", "value": "0x00", "event": "ok"}, {"name": "Intrusion", "value": "Not Readable", "event": "ns"}, {"name": "CPU Utilization", "value": "0 unspecified", "event": "ok"}, {"name": "PS 1 Output", "value": "80 Watts", "event": "ok"}, {"name": "PS_Volt_Out_01", "value": "12 Volts", "event": "ok"}, {"name": "PS_Volt_In_01", "value": "123 Volts", "event": "ok"}, {"name": "PS_Curr_Out_01", "value": "7.20 Amps", "event": "ok"}, {"name": "PS_Curr_In_01", "value": "0.90 Amps", "event": "ok"}, {"name": "PS 2 Output", "value": "80 Watts", "event": "ok"}, {"name": "PS_Volt_Out_02", "value": "12 Volts", "event": "ok"}, {"name": "PS_Volt_In_02", "value": "123 Volts", "event": "ok"}, {"name": "PS_Curr_Out_02", "value": "6.90 Amps", "event": "ok"}, {"name": "PS_Curr_In_02", "value": "0.90 Amps", "event": "ok"}, {"name": "27.1-LOM-Communi", "value": "49 degrees C", "event": "ok"}, {"name": "28.1-LOM Card-I/", "value": "60 degrees C", "event": "ok"}, {"name": "25.1-HD Controll", "value": "26 degrees C", "event": "ok"}, {"name": "25.2-HD Controll", "value": "32 degrees C", "event": "ok"}, {"name": "25.3-HD Controll", "value": "27 degrees C", "event": "ok"}, {"name": "LOM_Link_P1", "value": "Not Readable", "event": "ns"}, {"name": "LOM_Link_P2", "value": "Not Readable", "event": "ns"}, {"name": "LOM_Link_P3", "value": "Not Readable", "event": "ns"}, {"name": "LOM_Link_P4", "value": "Not Readable", "event": "ns"}, {"name": "ALOM_Link_P1", "value": "Not Readable", "event": "ns"}, {"name": "ALOM_Link_P2", "value": "Not Readable", "event": "ns"}, {"name": "Dr_Stat_1I1_B001", "value": "0x00", "event": "ok"}, {"name": "Dr_Stat_1I1_B002", "value": "0x00", "event": "ok"}, {"name": "Dr_Stat_1I1_B003", "value": "0x00", "event": "ok"}, {"name": "Dr_Stat_1I1_B004", "value": "0x00", "event": "ok"}, {"name": "Dr_Stat_2I1_B005", "value": "0x00", "event": "ok"}, {"name": "Dr_Stat_2I1_B006", "value": "0x00", "event": "ok"}, {"name": "Dr_Stat_2I1_B007", "value": "0x00", "event": "ok"}, {"name": "Dr_Stat_2I1_B008", "value": "0x00", "event": "ok"}, {"name": "CPU_Stat_C1", "value": "0x00", "event": "ok"}, {"name": "CPU_Stat_C2", "value": "0x00", "event": "ok"}]

@olivierlambert I vote for HPE also! Thanks!

@MajorP93 I'm running with Node v24.11.0 now (on Debian 11 and 12). There have been some issues with older versions of 24, but to seems fine at this time.

@joeymorin I use @ronivay XenOrchestraInstallerUpdater script to help build my XO setups. It keeps the last three successful builds and has a rollback option.

@joeymorin @olivierlambert Same here error... updates have fixed it for me (same day).

I have updated the drivers for the Realtek RTL812x 2.5/5/10G cards. So far they are working correctly. There are a few minor issues that Realtek needs to fix (for the next version, they say). Also the new Realtek firmware has not been added to XCP (but it's not required).

The standard included 8125 driver for XCP 8.3 is not updated. To use the new driver install the new alt version of the 8125 driver. To support the 8126 install the required 8125 alt version first and then the new 8126 driver.

The 8127 driver is also available for the new 10GB chips (I just got a production PCIe card for testing). The first issue I see with this card is, it is only a PCIe x1 card, so for full performance you need PCIe 4.0... There are other 8127 chips that support x2 so they will better support PCIe 3.0.

Realtek will keep releasing new versions of the chips that will require updates to the drivers to function correctly. Even current versions of Linux needs updates to support the newer chips.

@kagbasi-ngc Alma Linux 10 release notes related to older v2 CPUs.

Try a x86_64_v2 boot ISO

@stormi Update (to the update) installed and running. Buggy Windows 2025 boots now with QEMU update.

@stormi Pool source SR is NFS. Destination has local EXT4. It's only around 70 VMs.

@stormi After pool update, XO Continuous Replication times dropped by 50%. Before, the hourly CR took about 14-15 minutes, after the update it takes about 7-8 minutes now. Most of the CR time is spent on setup of the VM for transfer, not the actual data transfer bandwidth. Normal delta backup times did not change (data transfer limited). No change/update in XO/hardware/network, just this XCP update.

@dinhngtu Correct! I was in /etc/ which has a default directory.

@stormi Running.... but...

#  secureboot-certs install
Traceback (most recent call last):
  File "/usr/sbin/secureboot-certs", line 770, in <module>
    install(session, args)
  File "/usr/sbin/secureboot-certs", line 313, in install
    validate_args(args)
  File "/usr/sbin/secureboot-certs", line 288, in validate_args
    if os.path.exists(args.PK) and not is_auth(args.PK) and not getattr(args, "pk_priv", False):
  File "/usr/sbin/secureboot-certs", line 381, in is_auth
    with open(path, "rb") as f:
IOError: [Errno 21] Is a directory: 'default'

Also, can this update also include the fixvwc qemu Windows crash fix?

@dinhngtu Same results with the updated qemu-4.2.1-5.2.12.2~fixvwc2.1.xcpng8.3.x86_64. The Win2025 VM (without Xen tools) fails to boot correctly using stock XCP 8.3 but starts correctly with the fixvwc patch. (no actual performance or other testing done).