ATTENTION all Windows 11 25H2 users

Slak_Jaw · March 25, 2026, 12:43pm

Thanks for sharing @StevieD

megamema · March 25, 2026, 2:47pm

Based on experience, the Flx4 can behave differently on Windows than other controllers for which dedicated drivers are provided (such as Reloop, Denon, Numark, and Hercules).

Therefore, it would probably be best to isolate the problem from other controllers when trying to pinpoint its cause.

PKtheDJ · March 25, 2026, 3:09pm

FYI the latest early access build (b9245) of VirtualDJ has an option to disable MIDI 2.0 from the settings, which applies a fix to the whole system - so you can install VDJ, disable MIDI 2.0 then use the software of your choice! It can also be turned back on the same way.

Slak_Jaw · March 27, 2026, 1:11pm

Welcome to the Community @Carl_Mbereko. Thanks for sharing.

Slak_Jaw · March 27, 2026, 1:37pm

Hello everyone, we have created a how-to video for restarting the MIDI service on Windows. This has also been added to our main Help Center article:

djcanitamix · April 4, 2026, 5:22am

In case my experience is helpful to anyone: I have an HP Omnibook X AI, it came with a 1 TB SSD and I upgraded to a 4 TB one. Then I did a clean install of Windows 11 25H2 with all its updates.
The first problem I encountered was that Djay PRO wasn’t detecting my Pioneer REV 7.
I solved it by installing the beta version of Windows MIDI Service

link: Get Windows MIDI Services SDK Runtime and Tools - Windows MIDI Services

After it detected the controller, I had another problem with the platter speed, since my platter is motorized. I solved it by installing the MIDI Fix script

link: Releases · microsoft/MIDI · GitHub

djcanitamix · April 4, 2026, 5:24am

Something I forgot to mention is that I’m working with Windows 11 ARM.

Slak_Jaw · April 4, 2026, 10:33am

Thanks for sharing @djcanitamix

Slak_Jaw · April 4, 2026, 1:07pm

roelofjan.bouwknegt · April 11, 2026, 6:34am

This solution does it for me. I have Windows 11 25H2 pre installed so there is no way back to 24H2. Every time i’m going to use my Windows11 / Djay Pro / Steinberg UR22 / Pioneer DDJ200 combo I always perform the following steps:

Start Windows11 on my Lenovo laptop
Connect Pioneer DDJ200 and Steinberg UR22 to the USB ports of my laptop
Start Powershell Terminal as Administrator and execute command net start midisrv
After the midi service is started, start Djay Pro. The midi controller DDJ200 is immediately recognized and works well with Djay Pro

Slak_Jaw · April 11, 2026, 12:29pm

Hi @roelofjan.bouwknegt, welcome to the Community! Thanks for confirming.

Slak_Jaw · April 13, 2026, 2:23pm

Hello everyone, we released a supplemental update to Windows djay 5.6.4 on April 10 which should fix the issue where MIDI controllers are not detected. We added a small workaround which should ensure that the Windows MIDI Service is started on app launch. I hope that helps!

Apos · April 16, 2026, 5:44pm

5.6.4 didn’t fix my problem of double entries in MIDI devices

Any update on this?

Slak_Jaw · April 16, 2026, 5:48pm

Thanks for the follow up @Apos. Our team has still not been able to reproduce this issue.

Slak_Jaw · April 17, 2026, 12:53pm

Hi again @Apos, can you please share a screenshot from your device manager:

Win + X
Select Device Manager
Open the dropdown menu Sound, video and game controllers

Apos · April 17, 2026, 1:11pm

Slak_Jaw · April 17, 2026, 1:19pm

Thanks for the screenshot @Apos.

We are still not able to reproduce this issue. Can you please confirm if your controller is operating normally and if this double configuration is causing specific functional issues or not?

Apos · April 17, 2026, 3:11pm

What is noticable is that when djay loads and after the interface has fully initialized, it takes around 20 secs for the buttons on the controller to start responding. Also if I try to do any mapping modifications, only one of the ‘Configure’ entries is responsive to buttons/faders movements.

Otherwise the controller is functioning properly.

Slak_Jaw · April 17, 2026, 4:05pm

Thanks for the info @Apos

Slak_Jaw · April 20, 2026, 12:38pm

Hi @Apos, I checked with engineering, and the delay you’re describing sounds normal. Windows MIDI can be quite slow to start up. Through all of our testing, we have not been able to reproduce the double configure entries you are experiencing. The only thing we can suggest at this point is a fresh djay installation.

I suggest that you backup your djay Media Library database and any custom MIDI mappings, then uninstall djay, reboot your device, and reinstall the latest version of djay.
You can find the files above in the following location: How to find your djay data and move it to a new device | Algoriddim Support
Copy the files to a new location or external drive before uninstalling djay.
After reinstallation, you can simply copy these files back to their original locations to maintain your Hot Cues, Saved Loops, My Collection Playlists, History and Queue.
I hope that helps.