canonical / canonical/multipass

[Hyper-V] Instance gets stuck launching

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needs triage
Dominant language
C++
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Avg merge
3d 1h
Merged PRs (30d)
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Description

**Describe the bug**
When launching instances the Hyper-V backend can fail to find the VM so Multipass will never determine the correct state for the instance. The VM will be "running" in Hyper-V Manager but launching in Multipass. Restarting the daemon resolves the issue.

**To Reproduce**
In GUI, launch instances, observe issue

**Expected behavior**
The instances report the correct current state

**Logs**
```
[next-pekingese] [25920] stderr: Get-VM : Hyper-V was unable to find a virtual machine with name "next-pekingese".
At line:1 char:1
+ Get-VM -Name next-pekingese
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : InvalidArgument: (next-pekingese:String) [Get-VM], VirtualizationException
+ FullyQualifiedErrorId : InvalidParameter,Microsoft.HyperV.PowerShell.Commands.GetVM
```

**Additional info**
- OS: Windows 11 Pro
- CPU architecture or model: x86
- `multipass version`: dev build off main
- `multipass get local.driver`: Hyper-V

**Additional context**
My initial thought is we are calling Get-VM too soon after creating it

Contributor guide

Open the contributing guide

Research direction

Start by tracing the Hyper-V backend's Get-VM call and the launch state handling, then reproduce the issue by launching an instance through the GUI on Windows 11 with Hyper-V enabled. Done means Multipass reports the instance's correct current state even when Hyper-V has not yet returned the VM during launch.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp, powershell
Domain
backend, operating-systems
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
38/100

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