🔌Device will not connect — denied access to MIDI, USB not detected

Your computer does not see the device. Work through this checklist in order. This page also covers "denied access to MIDI" errors in the browser, browser MIDI-permission resets, and USB-cable / USB-port issues.

"Denied access to MIDI" in the browser

If the browser says denied access to MIDI or asks for permission every time, the site's MIDI permission was rejected once and is now cached. To fix:

1. Open browser settings in Chrome.
2. Go to Privacy and Security → Site Settings → MIDI.
3. Find synth.playtronica.com and settings.playtronica.com and change each to Allow.
4. Reload the page. The device should be detected within two seconds.

If MIDI permission is correctly set to Allow and the device is still not detected, continue below.

First — is the LED lit when the device is plugged in?

ℹ️ Note for Playtron and TouchMe. These devices do not light up an LED when you plug them in. A dark device is normal — skip straight to the platform steps below. Their LED blinks each time you complete the circuit and a note plays, so if you can trigger a note the device is working correctly.

For devices that do have a status LED (Scales, Biotron, Orbita):

• The LED is on. The device has power. The problem is in the software or the driver. Go to "No sound" if MIDI is not detected at the app level.
• The LED is off. The problem is the USB connection itself. Continue below.

On macOS

1. Open Audio MIDI Setup. Go to Applications → Utilities → Audio MIDI Setup. Click the MIDI Studio button in the top right. Confirm whether your Playtronica device appears in the window.
2. If the device is not visible, try a different USB port. For most devices a USB hub causes issues — connect directly. Older Micro-USB TouchMe (v1) and Playtron are the exception — on a new Mac they often need a hub added; see "Old Micro-USB device on a new Mac?" below.
3. Try a different USB cable. USB cables can fail silently. Use any other data cable of the same type. Charge-only cables will not work.
4. Restart the Core Audio daemon. Open Terminal and run sudo pkill -9 coreaudiod. Then plug the device back in.

On Windows

1. Open Device Manager. Right-click the Start button and select Device Manager. Look under "Sound, video and game controllers" or "Universal Serial Bus devices".
2. Check for a yellow warning icon next to the device. If you see one, right-click the device, select Update driver, and then Search automatically for drivers. If that does not work, uninstall the device and reconnect it.
3. Use a USB port directly on the computer. Avoid USB hubs.
4. Try a different USB cable. The cable must be a data cable, not charge-only.

Old Micro-USB device on a new Mac? Add a USB hub

For the older Micro-USB TouchMe (v1) and Micro-USB Playtron on a recent Apple-silicon Mac (M1/M2/M3 and later): the device powers on and reacts to touch, but the Mac shows nothing in Audio MIDI Setup — even with a good data cable straight into a port.

These devices use an early USB design that new Macs treat very strictly and refuse during setup. The device is fine — a USB hub re-times the connection so the Mac accepts it.

Add a hub:

1. Use a real USB hub — a box with its own chip and ports. A plain USB-C-to-USB-A adapter is only a wire and will not help.
2. Plug the hub into the Mac, then the device into the hub.
3. Open Audio MIDI Setup and check whether the device appears.

A simple, inexpensive USB 2.0 hub works best; a powered one (with its own adapter) is most reliable. On a USB-C-only Mac, pick a USB-C hub with regular USB-A ports. Examples, about €8–15: Anker, UGREEN, Amazon Basics or Sabrent 4-port hubs — for USB-C Macs, a UGREEN USB-C→USB-A hub or Anker USB-C hub. Avoid passive USB-C-to-USB-A adapters — they are not hubs. If one hub does not help, it is usually the wrong type; a basic USB 2.0 hub is the safest.

💬 Trying this? Message us on WhatsApp and we'll work it out together: chat with us on WhatsApp. Tell us your Mac model, the hub you used, and what Audio MIDI Setup shows.

Related pages

• No sound — once connected, this is the next-most-common issue.
• Troubleshooting hub — interactive walkthrough if you are not sure where to start.
• Firmware reset — last resort for stubborn cases.

Ask the community

🤝 Other Playtronica users have probably hit this before. The Playtronica Friends Facebook group has 4,400 members and is the fastest source of creative and technical help. Search the group's history first (use the magnifying glass at the top — try playtron mobile no sound, all leds lit, touchme biotron no sound, koala sampler midi, or whatever fits your problem). If your question is not already answered, post a new one with a [Device] prefix in the title. See the community page for what to ask there and what to email instead.

Still stuck

Email support@playtronica.com with the subject Device will not connect #[order number]. Tell us your operating system, the device, and what you have already tried. We aim for 24 hours, but a reply may take up to 3 business days.