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    Backup/Snapshots Questions

    VM's snapshots are not included in VM backup. Dedup is done with Proxmox Backup Server, where same data cannot be written twice.
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    Single IP on Kimsufi VPS

    https://forum.proxmox.com/threads/proxmox-8-3-3-guest-windows-server-2019-no-internet.161493/post-743954
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    [SOLVED] Dealing with corrupted chunks

    You can verify the backups with PBS which list missing/corrupted chunks.
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    [SOLVED] Dealing with corrupted chunks

    one way is doing a new backup which will readd missing/corrupted chunks.
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    PVE is killing my WinServer2025 VMs

    try with the default "x86-64-v2-aes" vCpu
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    PVE is killing my WinServer2025 VMs

    physical cpu host ? vcpu type VM ?
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    Proxmox VE 8.4.14 and Virtualization-Based Security (VBS)

    I have no experience with VBS , as I disable it anywhere (VM and, even on baremetal to not feel the sluggish )
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    [SOLVED] Kimsufi (KS-11) - Windows Server 2016 VM has no internet

    If you made manual changes directly to the /etc/network/interfaces file, you can apply them by running ifreload -a from the docs : https://pve.proxmox.com/wiki/Network_Configuration
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    [SOLVED] Kimsufi (KS-11) - Windows Server 2016 VM has no internet

    post your config to dig out the problem.
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    Proxmox VE 8.4.14 and Virtualization-Based Security (VBS)

    baremetal VBS, not nested VBS, that's the whole point.
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    Proxmox VE 8.4.14 and Virtualization-Based Security (VBS)

    Not the oldest, but seems borderline. try with mitigations=off try with another hypervisor
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    [SOLVED] Kimsufi (KS-11) - Windows Server 2016 VM has no internet

    1/ Firewall is not related as iptables PREROUTING bypass firewall. 2/ open 3389 publicly is not recommended as bots will try thousands credentials per seconds.
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    PVE 9 and Windows 2025 Iso : error 0xc000014c /efi/microsoft/boot/bcd

    you hit this bug : (workaround is direct upload with scp / winscp) Post in thread 'Proxmox VE 9.0 ISO Upload Corrupts Some Windows Server 2025 ISOs' https://forum.proxmox.com/threads/proxmox-ve-9-0-iso-upload-corrupts-some-windows-server-2025-isos.169531/post-806405
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    Proxmox VE 8.4.14 and Virtualization-Based Security (VBS)

    VBS ( = nested virtualization) require modern hardware. What is your cpu model ?
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    PVE 9 and Windows 2025 Iso : error 0xc000014c /efi/microsoft/boot/bcd

    Use RTM iso, as Windows updates itself monthly, it makes no difference. ( I don't see anymore the point of refreshed media, as each month, it'll outdated)
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    Server-Disk I/O delay 100% during cloning and backup

    if these are Samsung QVO, they are not suitable at all. QLC drives write very slow after cache (which is different from DRAM cache). There is plenty topics on the forum about it, mainly with ZFS because it reveals faster the slowness.
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    Server-Disk I/O delay 100% during cloning and backup

    no ZFS ?
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    Server-Disk I/O delay 100% during cloning and backup

    it's expected as they can't substain writes.
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    Problems with some VMs imported from ESXi

    Windows may require to boot once into Safemode to "re-enable" standard sata controller driver.
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    W2025 virtio NIC -> connection drop outs

    you need to find what to fix, as it's not virtio nic problem.
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