Any solution for this? I have a GTX1070. GeForce Experience doesn't even detect the game so I can't force it to use the 1070 instead of the integrated chip

Of all the things it might have been . . .

I found a solution in a newer thread about this topic started and solved by KurakDarcia. They found that disabling their headset allowed the game to start. I did the same AND started the game with the lithtech.exe, not the MM9.exe or the launcher.

And now it works. (Headphones : Logitech G533 Bluetooth wireless)

You are my hero for updating this thread with the fix as well! I tried unplugging my wireless headset (HyperXCloud Flight) and the game launched perfectly! And while I sometimes have issues with audio not working if it's plugged in after launching a program, the sound actually worked fine.

Truly a bizarre bug, but I played MMIX as a kid, so I can't say I expected anything else, haha.

While I'm glad the solution worked for you and I certainly thank you for the kind words, 99% of the credit should go to KurakDarcia. They put in the time and effort to find the fix. I only reported their work.

Right, but I don't use a headset...

Hello everyone, got the very same problem with a little box and nothing else, win10 x64. Tried everything mentioned in this topic, tech support is silent so far, I'm getting a bit desperate.

Is there anything else you can unplug?

Try removing every single USB cable/dongle from your PC and see if it runs.

I literally just solved the problem myself for myself as I type this. It was the previous post that got me thinking on it. I went into control panel > device manager and started disabling Human Interface Device drivers and trying to get the game to load. HID - Compliant Device was the cause of the game not starting. I disabled that and the game started right up.

Tried that, it wouldn't work(
That also didn't work for me, sadly.

Ok, so it DID work at last! For the future generations of oldgamers who might experience the same - I don't know what worked exactly, but I did everything that I found in this topic:
- install outside the Program files folder
- disable antivirus
- dgvoodoo
- patch to version 1.3
- compatibility settings as described by previous commentators
- disable HID-compliant device
I installed every single thing from this list for mm9: http://mm6world.ru/archiv.htm

It doesn't freeze on loading, graphics is good, everything goes well. The only thing is that it freezes when I exit the game, but come on, I've been trying to make it work for so long, so I can put up with that.

Also if somebody has this problem - when you name your characters, the names wouldn't save. To make it work you need to press enter after you type in the name and then go to overview party screen - repeat for each character.

thanks....

Shocked to find disabling HID-Compliant devices did the trick.
to lazy to manually turn them off and on a again though so for anyone interested just run this as admin in power shell (AT YOUR OWN RISK!!!!!):

# Disable only HID-compliant Human Interface Devices in Device Manager

# Step 1: Get the list of HID-compliant devices
$hidDevices = Get-PnpDevice -Class "HIDClass" | Where-Object { $_.Status -eq "OK" }

if ($hidDevices.Count -eq 0) {
Write-Host "No HID-compliant Human Interface Devices found."
} else {
Write-Host "Disabling HID-compliant Human Interface Devices..."

# Step 2: Disable only HID-compliant devices
foreach ($device in $hidDevices) {
$deviceId = $device.DeviceID
$deviceName = $device.FriendlyName

# Check if the device is a HID-compliant device
if ($deviceId -like "HID\*") {
Write-Host "Disabling device: $deviceName"
Disable-PnpDevice -InstanceId $deviceId -Confirm:$false
}
}

Write-Host "All HID-compliant Human Interface Devices have been disabled."
}

And to turn back on:

# Enable only HID-compliant Human Interface Devices in Device Manager

# Step 1: Get the list of HID-compliant devices
$hidDevices = Get-PnpDevice -Class "HIDClass" | Where-Object { $_.Status -eq "Error" }

if ($hidDevices.Count -eq 0) {
Write-Host "No disabled HID-compliant Human Interface Devices found."
} else {
Write-Host "Enabling HID-compliant Human Interface Devices..."

# Step 2: Enable only HID-compliant devices
foreach ($device in $hidDevices) {
$deviceId = $device.DeviceID
$deviceName = $device.FriendlyName

# Check if the device is a HID-compliant device
if ($deviceId -like "HID\*") {
Write-Host "Enabling device: $deviceName"
Enable-PnpDevice -InstanceId $deviceId -Confirm:$false
}
}

Write-Host "All HID-compliant Human Interface Devices have been enabled."
}

Cool! Now you're all set up for hours of entertainment, battling baby skeletons and homeless people across vast empty fields.

Just tried to lauch the game, didn't work even with HID-compliant device disabled and all (just got error 0xc0000022 instead of nothing at all after I switched iithtech.exe's compatibility to admin)

And then after googling a bit...
start menu, typing OptionalFeatures.exe, opening legacy components, enabling directplay
And it worked (even with compliant device enabled)

Hey everyone,

Nothing below was working for me but was inspired to push through to a solution since i have so many issues with GOG games since upgrading to Windows 11.
From System Settings > Select Display > Select Graphics
when in graphics look under "Custom Options for Apps" and select browse.
Browse to the folder that contains "lilthtech.exe"

I cannot speak to anyone elses graphic cards but by taking control away from windows and selecting my high performance graphics card, magically everything started working.

Most likely if you set lithtech.exe to run on your "high performance" card i think you will find another new solution for those who this isn't working for.

I think Win 11 really pushes "power saving modes" and makes a lot new software decisions based on energy consumption rather than verifying applications are running.

Basic specs for my machine :
Acer NItro Laptop
Win 11 x64
NVIDIA GTX 1650 - my high performane card...
Hope i helped someone

Thanks Meehanrj!

Every now and then I go back to play MM9 to be disappointed and always have to figure out how to make it work again lol

This trick worked for me on windows 11