Forum Discussion
ned3000
Feb 21, 2026Copper Contributor
MIDI sysex message transmit fails after installing Security Update KB5077181
In the widely used MIDI application MIDI OX, I can no longer transmit MIDI sysex messages to a MIDI output port. Connecting a MIDI input in the app to a MIDI output echoes MIDI channel messages norma...
Mustafoan
Feb 25, 2026Brass Contributor
The KB5077181 update appears to interfere with MIDI SysEx transmission in applications like MIDI-OX. Error messages such as "SysEx: No Buffers Available" indicate problems with buffer allocation or driver communication. The problem affects multiple USB MIDI interfaces, confirming it's not device-specific.