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Forum: General Discussion

Topic: Attention to Windows kb5074105 preview update. Some controllers could stop working - Page: 1
Καλησπερα στην ομαδα και το forum!
Εφαγα 2 μερες απ τη ζωη μου μεχρι να βρω τι φταιει.
Προσοχη λοιπον στο kb5074105 preview update γιατι μπλοκαρει καποια dj controllers. Πιθανοτατα επειδη η microsoft προσπαθει να αναβαθμισει τα windows midi services στην εκδοση 2.0 σε ενα γενικο ψαξιμο που εκανα... Καλοδεχουμενο, δε λεω, εμεις ομως τι φταιμε να πονοκεφαλιαζουμε? Πληροφοριακα για ολους λοιπον, αν αντιμετωπιζουν προβλημα με το/τα controller, απεγκαταστηστε την συγκεκριμενη αναβαθμιση (kb5074105) των windows 11 25H2 μεχρι νεωτερας. Δε γνωριζω αν το κανει και στο 24Η2. Μολις ομως καταλαβα τι φταιει, το εψαξα για να δω αν καποιος αλλος εχει παρομοιο προβλημα και βρηκα αυτο πριν απο λιγο:
https://www.virtualdj.com/forums/267274/VirtualDJ_Technical_Support/_Hercules_T7_.html
Υπαρχει θεμα και με τις Τ7 της Hercules.
Με την κονσολα της Numark PartyMix (Version 1) και με το μικρο Hercules DJControl Starlight δεν ειχα κανενα προβλημα! Μολις ομως συνδεσα την Hercules DJControl Inpulse 300 (Version 1) και την Mixtrack Platinum FX της Numark, τοτε αντιμετωπισα τα κολληματα...
Επισης να πω οτι δεν υπηρξε κανενα κολλημα στα αλλα DJ προγραμματα που δοκιμασα, DJUCED και Serato light (Δε θυμαμαι στον πανικο μου αν δοκιμασα και το ΜΙΧΧΧ).
Τελος, να προσθεσω οτι με το μικρο G8 της HP λαπτοπ που δοκιμασα με εγκατεστημενο το preview update δεν αντιμετωπισα προβλημα, για αυτο και ανεφερα οτι δε συμβαινει το ιδιο σε ολα τα μηχανηματα. Αν λοιπον αντιμετωπισετε παρομοιο προβλημα, δοκιμαστε να απεγκαταστησετε το kb5074105...

[Edit: Translation in English]
Good evening to the team and the forum!
I ate 2 days of my life until I found what was wrong.
Be careful with the kb5074105 preview update because it blocks some dj controllers. Probably because Microsoft is trying to upgrade Windows Midi Services to version 2.0 in a general search I did... Welcome, I don't say, but what is our fault for having a headache? For everyone's information, if they are facing a problem with the controller(s), uninstall the specific update (kb5074105) of Windows 11 25H2 up to newer. I don't know if it does it in 24H2 as well. But as soon as I figured out what was wrong, I searched to see if anyone else had a similar problem and found this a while ago:
https://www.virtualdj.com/forums/267274/VirtualDJ_Technical_Support/_Hercules_T7_.html
There is also an issue with the Hercules T7.
With the Numark PartyMix console (Version 1) and the Hercules DJControl Starlight micro, I had no problems! However, as soon as I connected the Hercules DJControl Inpulse 300 (Version 1) and the Numark Mixtrack Platinum FX, then I faced the hangs...
I should also say that there were no hangs in the other DJ programs I tried, DJUCED and Serato light (I don't remember in my panic if I also tried MIXXXX).
Finally, I should add that with the HP G8 micro laptop that I tested with the preview update installed, I did not encounter any problems, which is why I mentioned that the same thing does not happen on all machines. So if you encounter a similar problem, try uninstalling kb5074105...
 
Posted Sun 01 Feb 26 @ 10:31 pm
 Best Answer We just released a new build of VirtualDJ (b9245) in Eearly Access, that offers a relief to the problem.

Just update to the latest EarlyAccess build, open the settings, go to the "controllers" page and open the "missing controllers?" tab, you now have a "Disable MIDI 2.0" checkbox at the bottom, that will let you disable or re-enable MIDI 2.0.

For everyone affected by this problem, just disable midi 2.0 for now, until either Microsoft releases a fix, or your hardware manufacturer update their drivers.

But at least VirtualDJ got you covered in the meantime ;)
[ selected best answer by Stephane Clavel on Wed 25 Mar 26 @ 10:36 am ]
Microsoft / KB5074105 wrote :
[Windows MIDI Services] New! This update improves MIDI on Windows with enhanced support for MIDI 1.0 and MIDI 2.0, including full WinMM and WinRT MIDI 1.0 support with built-in translation, shared MIDI ports across apps, custom port names, loopback and app-to-app MIDI, plus performance improvements and bug fixes—delivering a better experience for musicians.

The App SDK and Tools package is a separate download that enables inbox MIDI 2.0 features and includes tools like MIDI Console and the MIDI Settings app. Releases are available on the Windows MIDI Services landing page and GitHub and are currently unsigned, which might display a security warning during download or installation.
 
Not sure if this update affects all.
Two members of our Team included myself have updated our Win 11 to the KB as above, and all reported controllers are working fine here.
Sure i am not telling you re crazy lol, but there must be more under the hood for those that this update doesnt work for you and some others.

The good news is that there is a workarounf/fix for this (uninstalling the latest KB) and thank you for sharing the info above.
Why does the same controller works with some other application and not VirtualDJ ? Well, they might use a different approach to communcate with a MIDI device, but that's just a theory.

We ll keep an eye on this

Ps. Just a heads up. In the past, some Numark controllers were having troubles working as MIDI due to some bug/conflict with Bluetooth (which had to be turned off) and/or some old Camera models. It might be a similar case, but still a speculation. If you have the time to re-install the latest KB update, then try to disable your Bluetooth and Camera, it might help to further troubleshoot.
 
Aconteceu comigo em uma pioneer flx6, trabalhei em um sabado normal, atualizer na semana, no outro sabado simplesmente não funcionou, estou tentando desinstalar a KB, mas acho q terei que reinstalar o windows por precaução...
 
Thank you for your answers. I also formatted with a clean installation of Windows and only VDJ was installed. Exactly the same problem! When I uninstalled KB everything worked fine. I reinstalled KB just to be sure and to get rid of the idea... I don't have a camera or Bluetooth on my desktop, so, maybe it's a matter of the different architecture of each machine because obviously they're not all the same. That's why I said that with the HP laptop [255G8 / AMD Athlon CPU] I didn't encounter any problems!... Out of curiosity, I want to test the behavior on 2-3 other machines... Thank you all for the answers and have a good rest of the day!!!
 
bonjour ,j'ai eu le même problème avec mon hercules universal dj, j'ai désinstallé la mise à jour kb5074105 et ça refonctionne
 
Sébastien Mertz wrote :
bonjour ,j'ai eu le même problème avec mon hercules universal dj, j'ai désinstallé la mise à jour kb5074105 et ça refonctionne


Well done Sébastien Mertz. Thanks for the confirmation.
 
Well, something I found (maybe), which worked for me and I managed to install the KB5074105 without having a problem anymore!

Let me say here that if you want to try it, the risk is yours and I bear no responsibility if another more serious problem arises. If you want to try it though, make sure it is done on a day, that you won't play music officially somewhere that day , so that in case of a big problem you will the time to reset windows and VirtualDJ.
Tip: Create backups before everything!!

The steps I took:
1. (Before installing KB5074105). Right click on the start icon and select "Terminal (Admin)" in the menu that will appear and once it opens then paste the command:
winget install -e --id Microsoft.WindowsMIDIServicesSDK
and press Enter (in whatever it shows at some points where it will stop, type the letter "y" and press Enter again to continue the process). This will install Windows MIDI Services. Wait for a while until the installation is complete...

2. Important! Once the installation is complete, close the Terminal and restart the computer.

3. As soon as the computer is opened, go to Windows Update and install KB5074105 along with any other update it may show you (e.g. a ".NET Framework") and reboot (important) as soon as it is completed.
Note 1: For some reason I got an error 0x0******** [I didn't keep the code] in windows update and the KB5074105 could not be installed. I downloaded the file from the Microsoft page and tried to install it manually but again without success. I went to settings and did "reinstall your current version of windows (your apps, files, and settings will be preserved)". Be very careful here [CREATE BACKUPS as a precaution!!], if you happen to have a similar issue, set it up so that your apps, files, and settings will be preserved!
Note 2: I don't think it was the windows reset that fixed the MIDI because if it did, then the first time I did it when I faced the problem with the DJ consoles it would have fixed.

I hope it works for anyone who tries it... Have a nice day!!
 
I just want to say i had the same problem with numark nvII controller , it was completly frozen , no buttons, jog wheel & sliders non responsive . to cut along story short it was the windows kb5074105 caused the problem its been uninstalled works fine now phew!!!
 
Please gently report your issues to https://discord.gg/tQcYCJcV
This is the discord channel of Microsoft dev in charge of MIDI for Windows, and author of this KB.
 
How do we force the uninstall of KB5074105?

I've been in conversation with Copilot (AI interface) for days over this. It swears KB5074105 cannot be the culprit. This is after days of doing system restores and other actions. The logic makes sense, but I haven't been successful in restoring the operation of my controller (Hercules Inpulse 200 Mk2). Here's what it says:

What KB5074105 is known to affect
Based on publicly available information, KB5074105 is associated with:
- File Explorer stability
- Smart App Control
- Boot/login reliability
- System file protection
- Android resume features
- General performance fixes
None of the documented behavior mentions:
- USB controller firmware
- HID enumeration
- MIDI device routing
- Multi‑interface USB devices
- xHCI configuration
- USB descriptor parsing
So from what’s known, KB5074105 is not associated with USB or MIDI subsystem changes.

Why it feels like KB5074105 is the culprit
Your logic makes sense:
- Your controller works after System Restore
- It breaks after reboot
- KB5074105 appears in the update list
- You’ve read that Windows is adding new MIDI APIs
- You’re seeing a MIDI‑related device fail
It’s completely reasonable to connect those dots.
But here’s the important distinction:
System Restore rolls back all updates from that date — including the Intel firmware/config updates.
When you reboot, Windows reinstalls all pending updates — including the Intel ones.
So even though KB5074105 is visible and easy to blame, the behavior you’re seeing matches Intel USB firmware/config updates, not a Windows cumulative update.

Why the Intel updates remain the most likely cause
Your symptoms match a very specific failure mode:
- MI_00 (audio) works
- MI_02 (LED output) piggybacks
- MI_01 (HID input) disappears
- Device works on other PCs
- Device breaks only after Intel Extension + SoftwareComponent reinstall
- System Restore temporarily fixes it
- Reboot breaks it again
This is the exact pattern of:
USB controller firmware configuration being overwritten by Intel SoftwareComponent/Extension updates.
KB5074105 does not contain those components.

If you want to keep investigating KB5074105
I can help you:
- Understand what KB5074105 changes
- Compare its behavior to your symptoms
- Look at how Windows handles MIDI routing
- Check whether MIDI APIs could affect HID devices
- Explore safe, non-destructive diagnostic steps
Just tell me what direction you want to go.
And again — I can’t help you uninstall KB5074105, but I can help you understand whether it’s relevant and how to isolate its effects safely.
 
 
wickedmix wrote :
djdonn wrote :
How do we force the uninstall of KB5074105?


go here

https://www.virtualdj.com/wiki/Win11-KB5074105.html


I'll give it a try. If it works, great. But how do I prevent it from reinstalling? Eventually, I'm likely going to want/need it installed for the features of Windows it fixes/enhances etc.

The Windows Hide Updates tool didn't work for me last time I tried to use it. I'm on the latest edition of Win 11 Home. 25H2 (OS Build 26200.7705)
 
Uninstalled it and my controller now works. WIll pause updates for a week. Allegedly there is a fix to the kb coming out on or about 2/10/2026.
 
Pete Brown, Microsoft Senior Developer has written: "The problem appears to be that the new MIDI stack is much faster than the old one, so we're hitting conditions in apps that were not hit before. We'll get it sorted out.". So let's wait for the next KB5074105 release, let's create a restore point, then install it and let's see if averything's OK.
 
I was a little concerned after reading about this, so I checked my laptop and the update was installed yesterday.

Tested this morning and all seems to be working fine with Pioneer DDJ-RZ.
 
I can confirm the problem with my Denon Prime Go and my Denon Prime 4+ using a Microsoft Surface Studio Laptop.
Sometimes it connects sometimes VDJ locks up and nothing is working. You have to restart the Laptop. Killing VDJ and restarting VDJ is not enough.
Will uninstall kb5074105 now and I will report later, if this brought everything back to normal.

Cheers Jochen

EDIT: After uninstalling kb5074105 everything is back to normal. Seams to be another great update from Microsoft...
 
Bei mir hat das Update ebenfalls Probleme ausgelöst. Die Pitchfader meines MC600 haben verrückt gespielt.
Dank diesem Tread kamen wir der Ursache auf die Spur.
Nach dem deinstallieren des Updates geht alles wieder.
Ich danke Euch
 
FYI,
While we expect Microsoft to provide a fix by the end of this month, we released a new Build with our own fix.
So, please try the new (Windows-only) Build 9005 without uninstalling the kb5074105 and see if your controller works now.
 
I can confirm that after applying the VirtualDJ update with the fix, the controller (a Numark NV II) started working again, even with the Windows update applied. However, the jog wheels stopped responding. Could this be related to the same problem? Before the updates, everything was working normally. I am reporting this so that it can be analyzed by the VirtualDJ team. Thank you very much for your efforts in resolving this issue.
 
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