# Loss of Midi Control

**URL:** <https://forums.allen-heath.com/t/loss-of-midi-control/33117>\
**Category:** Qu Troubleshooting\
**Created:** [8 October 2026 10:23 UTC](https://forums.allen-heath.com/t/loss-of-midi-control/33117 "2026-10-08T10:23:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![brianholder](https://avatars.discourse-cdn.com/v4/letter/b/c4cdca/32.png) [@brianholder](https://forums.allen-heath.com/u/brianholder)\
**Post date:** [8 October 2026 10:23 UTC](https://forums.allen-heath.com/t/loss-of-midi-control/33117/1 "2026-10-08T10:23:25Z")

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I am using Multiplay to control my mixer scenes. Recently I changed mixer to Allen & Heath QU5 which uses software on the computer (Allen & Heath Midi Control) rather than external hardware to output the midi control to the mixer. All works well until suddenly it stops working. I have found that editing in Multiplay can cause this, but it also happens whilst running a show. The disconnection is not reflected in Multiplay ie. it doesn’t freeze like it does if you pull out the hardware USB. Any ideas?  
Brian