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Hyper-V failing to start any of my VM's.

Dovi Felsenburg 0 Reputation points
2025-01-22T23:12:22.1866667+00:00

I am having this issue that after doing an update that updating my Bios and windows 11 to: "2025-01 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for x64 (KB5049622)"

and,

"2025-01 Cumulative Update for Windows 11 Version 24H2 for x64-based Systems (KB5050009)"

non of my Hyper-V VM's are starting unless I turn off TPM but then windows 11 won't work. They all give the error saying:

Screenshot 2025-01-22 175817

I have tried creating new VM's, it did not fix the issue.

Dell Inspiron 3910

12th Gen Intel Core i5-12400

32.0 GB RAM

Windows 11

Version: 24H2

Hyper-V
Hyper-V
A Windows technology providing a hypervisor-based virtualization solution enabling customers to consolidate workloads onto a single server.
2,812 questions
Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
10,677 questions

1 answer

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  1. Geoff McKenzie 315 Reputation points
    2025-01-23T04:52:30.9066667+00:00

    Just a shot in the dark here.

    You mentioned updating the BIOS.

    Did you check, after the BIOS update, that the BIOS update didn't wipe settings related to virualisation support? e.g. turn off a setting you had previously turned on? I have seen BIOS updates do that in the past, so, it may be worth checking....

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