Guys,
POSSIBLE SOLUTION!!!! to Focusrite Pro 40, Win 10 and VIA 1394 chipset ... (maybe for other software too?)
Hi, my Pro 40 / VIA pcie card was not responding after updating Win 10 but I have a possible solution (pieced together from various sources).
 
1. Download and install the legacy driver here:
https://download.microsof..._OHCI_LegacyDriver.msi
 
2. IMPORTANT STEP!!! After installing go to C:\Program Files (x86)\1394 OHCI Compliant Host Controller (Legacy)\x64_driver ... Right click on Legacy1394.inf and choose 'install'
 
3. Install and run Mix Control 3.3 - still available here http://us.focusrite.com/d...saffire-mix-control-33
Seems the extra .inf install step is needed to force the system to use the driver. Not sure about MC 3.4 or 3.7 - system is stable so
 
I'll stick with that for now.
 
Good luck and happy new year !!!
 
Gary
 

Thanks for sharing Gary

I've been searching for a fix for my pro14 for a good 6 months this looked crazy enough to work but when i right clicked the inf file and clicked install it said "the inf file you selected does not support this method of installation"

Hi Cigadeemus - did you get it working? I forgot to add that a reboot can help too.
 
Check this thread...http://superuser.com/questions/210943/what-causes-the-inf-file-you-selected-does-not-support-this-method-of-installat 
 
Hope you get there!
 
Best
 
Gary