This worked for me for a few day, but now I'm back to having the same issue

Just today my wifi connection disappeared on my laptop. Last time it happened I simply rebooted and that fixed it; didn't work this time. Laptop went to sleep, usually upon waking wifi will take a few seconds to connect, but this time no dice. Checked settings -> updates & found a pending windows (10) system update. Fortunately, I have an ethernet cable, so connected it to my laptop, downloaded/installed the update, clicked "restart," & when finished went to wifi settings to check available networks, found both my networks (2.4 GHz & 5 GHz), clicked/checked both to connect, and viola wifi access was back.

Never had this happen before. My cell was still connected to wifi so was able to check availability troubleshoots, but they looked a bit too complicated for my comfort. I was fortunate applying system update fixed my issue. Maybe this might help someone else, hopefully.

If your WIFI Keeps disappearing after the restart.

Try this proven fix - Registry > Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Wcmsvc

and look DependOnService in there, Open it and remove the last line. For some reason Microsoft (re t _ _ d s) decided to add Http auth proxy as a dependency in 24h2.
Final Reg value should be like this

RpcSs

NSI

Reboot > Profit.

This seams to have solved the issue for me.

Prior to this, every boot I did I had to disable and then enable my network card via device manager. Not had to since making this change.

If your WIFI Keeps disappearing after the restart.

Try this proven fix - Registry > Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Wcmsvc

and look DependOnService in there, Open it and remove the last line. For some reason Microsoft (re t _ _ d s) decided to add Http auth proxy as a dependency in 24h2.
Final Reg value should be like this

RpcSs

NSI

Reboot > Profit.

We've had this issue in a corporate environment across a range of customers, it's a regkey. Easy enough to fix: effectively, this registry key gets changed to '4' which disables WinHttpAutoProxySvc as a service, killing the wifi and making it not appear in the GUI. When you enable the network adapter, it turns off immediately - because the service can't run.

You can do this via the GUI as well, just open regedit and then go to HKLM:\SYSTEM\CurrentControlSet\Services\WinHttpAutoProxySvc where you ought to find 'Start' and change that to 3. Tactical restart, should do it.

$ServiceName = "WinHttpAutoProxySvc"
$RegPath = "HKLM:\SYSTEM\CurrentControlSet\Services$ServiceName"
$RegName = "Start"
$DesiredValue = 3
$LogFile = "C:\Tech\service_log.txt"

Function Write-Log {
    param ([string]$Message)
    $TimeStamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
    "$TimeStamp - $Message" | Out-File -Append -FilePath $LogFile
}

Start logging

Write-Log "Script started."

Get the current registry value

$CurrentValue = Get-ItemProperty -Path $RegPath -Name $RegName -ErrorAction SilentlyContinue

if ($CurrentValue -and $CurrentValue.$RegName -ne $DesiredValue) {
    Write-Log "Updating registry value from $($CurrentValue.$RegName) to $DesiredValue."
    Set-ItemProperty -Path $RegPath -Name $RegName -Value $DesiredValue
    Write-Log "Registry key updated successfully."
} elseif ($CurrentValue -and $CurrentValue.$RegName -eq $DesiredValue) {
    Write-Log "Registry key is already set correctly ($DesiredValue)."
} else {
    Write-Log "Registry key not found or inaccessible."
}

Get the current service status

$ServiceStatus = Get-Service -Name $ServiceName

if ($ServiceStatus.StartType -ne "Manual") {
    Write-Log "Service is not set to autostart. Enabling it..."
    Set-Service -Name WinHttpAutoProxySvc -StartupType Manual
    Write-Log "Service enabled. A reboot may be required."
} else {
    Write-Log "Service is already set to autostart."
}

Write-Log "Script execution completed."
Write-Host "Script completed. Log saved to $LogFile"

**

We logged a ticket with Microsoft and they said we had to open a paid-ticket, a good blog on this is as follows: https://www.windowslatest.com/2024/10/27/windows-11-24h2-issues-break-internet-wi-fi-network-sharing-cause-more-bsods/