Windows Server 2025 VM Loses Network Connectivity

[shakibshalim74]

I am facing an issue with one of my Windows Server 2025 VMs running on a CloudStack host. The VM is configured with 20 CPU cores, 192 GB RAM, 20 TB storage, and multiple IPs assigned to a single network interface. Our CloudStack version is 4.19.3.0.

The problem is that this VM loses network connectivity after a few days. If I disable and re-enable the network interface, the connection comes back immediately.

However, another Windows Server 2025 VM created from the same ISO template works fine, and other VMs with lower CPU/RAM and a single IP do not experience this issue.

Has anyone encountered a similar issue or have suggestions on how to troubleshoot this network instability?

[boring-cyborg[bot]]

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[rajujith]

@shakibshalim74 can you check if there is a duplicate IP in the network.

[shakibshalim74]

On that VM, a single network interface (Ethernet 2) has multiple IP addresses assigned.