VM's missing in Hyper-V Manager Windows 11


Almighty1

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Greetings all:

Does anyone know what process or services controls the listing of VM's in Hyper-V Manager under Windows 11? Every so often at least under 22000.346, it seems like Hyper-V Manager which was working fine when closed and reopened again does not show the VM's listing and the only way I have figured out to fix it is to restart the system.
 

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Bree

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Every so often at least under 22000.346, it seems like Hyper-V Manager which was working fine when closed and reopened again does not show the VM's listing
22000.346 is an insider preview build, the current release build is 22000.318. I have no such issues in .318.

When you open Hyper-V manager and it's empty, does it show the name of your PC in the left hand pane? If it does, click on it. If you still don't see the VMs or you don't see your PC's name, click on the name Hyper-V Manager in the left pane, then select Action > Connect to Server... on the menu bar, then choose Local server. See it that brings back the list. If that works then it seems that it's sometimes failing to connect to the server on opening Hyper-V Manager for some reason, maybe a bug or maybe something odd in your set up..
 

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    Windows 11 Home
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    Acer Aspire 3 A315-23
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    AMD Athlon Silver 3050U
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    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. A test migration ran Insider builds for 2 months. When 11 was released on 5th October it was re-imaged back to 10 and was offered the upgrade in Windows Update on 20th October.


    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.
  • Operating System
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    Dell Lattitude E4310
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    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround.


    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

Almighty1

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22000.346 is an insider preview build, the current release build is 22000.318. I have no such issues in .318.

When you open Hyper-V manager and it's empty, does it show the name of your PC in the left hand pane? If it does, click on it. If you still don't see the VMs or you don't see your PC's name, click on the name Hyper-V Manager in the left pane, then select Action > Connect to Server... on the menu bar, then choose Local server. See it that brings back the list. If that works then it seems that it's sometimes failing to connect to the server on opening Hyper-V Manager for some reason, maybe a bug or maybe something odd in your set up..
I can't tell if the problem happens in .318 or not because normally I don't keep Hyper-V running from bootup and only when I read that the Windows 11 Development Channel has a update. Yes, it will always show the name of the PC as that's the VM host. It's just not showing the only VM client I have when the problem happens. I have really had it happened only in 2 sessions, with the first session, I was able to restart or start one of the services that has Hyper-V in it and it made the VM showed up again but yesterday, no such luck. I'll give what you mentioned a try should it happen again and also get screenshots so it's easier to explain but from what I remembered, this is what it looked like, I've edited the screenshot to show what it looks like:

Normally it looks like this:
1637466537138.png

When the problem happens, the Virtual Machines is not showing up.

These are also the services and their status when it's working which I will use for reference should the problem happen again:
1637466217098.png
 

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My Computer

System One

  • OS
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    32GB using 2x16GB modules
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    Intel UHD 630 & NVIDIA GeForce GTX 1050 Ti with 4GB DDR5
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    PSU
    Dell XPS 15 9570
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    Dell XPS 15 9570
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    Stock
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    Comcast/XFinity 1.44Gbps/42.5Mbps
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    Windows Defender that came with Windows

Almighty1

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Just did a search on Google and it seems this has a lot of good hints:
 

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System One

  • OS
    Windows XP/7/8/8.1/10/11, Linux, Android, FreeBSD Unix
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 15 9570
    CPU
    Intel® Core™ i7-8750H 8th Gen Processor 2.2Ghz up to 4.1Ghz
    Motherboard
    Dell XPS 15 9570
    Memory
    32GB using 2x16GB modules
    Graphics Card(s)
    Intel UHD 630 & NVIDIA GeForce GTX 1050 Ti with 4GB DDR5
    Sound Card
    Realtek ALC3266-CG
    Monitor(s) Displays
    15.6" 4K Touch UltraHD 3840x2160 made by Sharp
    Screen Resolution
    3840x2160
    Hard Drives
    Toshiba KXG60ZNV1T02 NVMe 1024GB/1TB SSD
    PSU
    Dell XPS 15 9570
    Case
    Dell XPS 15 9570
    Cooling
    Stock
    Keyboard
    Stock
    Mouse
    SwitftPoint ProPoint
    Internet Speed
    Comcast/XFinity 1.44Gbps/42.5Mbps
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    Microsoft EDGE (Chromium based) & Google Chrome
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    Windows Defender that came with Windows

Snoop05

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I also had this behavior when after short period of time (days or not even) Hyper-V breaks beyond repair. Never had this issue happen on 1904x builds, but for me its 100% reproducible since couple insider builds before 11, and still present in the latest 22000 build and insider dev channel.
HV manager can't connect, VMMS is running, takes long time to shut down and can't be started back.
 

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    Windows 10, NixOS
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    ASRock B550 Phantom Gaming ITX/ax
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    2x16GB G.SKILL TridentZ DDR4-3200 CL14
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