I had to register my computer with the XLN website by running the online installer. I had to delete one of my registered computers on their website, because you're only allowed two computers...why I had two I don't know, but I deleted one then added my computer with the new OS. The pop-up didn't have a selection for Windows 10 so I selected other and that worked fine. Now my XLN products are working....If that's all that's wrong I'll be happy.

I was just looking at Native Instruments site and they recommend against upgrading to W10 until they have completed their testing.  This is probably super-conservative protection-speak from NI, but have any of our W10 converts successfully run projects with NI plugs, e.g. Kontakt, etc. ?

Cakewalk Roland UA-1G shows as "compatible" on the Microsoft Win 10 Compatibility search page...so I am going to go for it on this computer...

I've been running Sonar Platinum on Win 10 for months...no issues...
I also run Pro Tools, Studio One 3 Prof, Reaper, etc..and they all 
work just fine.  All my drivers work just fine...so I wouldn't be afraid.

There could be problems with anything...but I took the chance and am quite
satisfied with the results...

Well I have the favorites issues sorted out, not perfect, but I can live with it. A bit awkward but as with anything new, it takes time to get used to it. The Edge browser is really fast though, that's why I like it.

I have a MOTU Midi Express 128 I am concerned about (before I switch to Win 10).  The driver gets tossed in Win 7 often when starting Sonar (any version, really since Sonar 8) and I've some issues with other software in the past.  I've gotten the impression over the years that MOTU's just not too interested in PC stuff generally, so I worry about driver issues with Win 10 not getting sorted out for a while if/when they occur.
 
Anyone, perchance, have experience with this and Win 10?

After finishing the installation of Windows 10, My APro keyboard and UA-1G drivers are not working.  They both show as incompatible with no new driver available

Thedoccal
After finishing the installation of Windows 10, My APro keyboard and UA-1G drivers are not working.  They both show as incompatible with no new driver available

What are your options? Is there anything at all on the manufacturers' websites?

Thedoccal
My APro keyboard and UA-1G drivers are not working.  They both show as incompatible with no new driver available

Don't upgrade with Roland gear..
http://www.roland.com/support/support_news/250010
 

I don't see anything Windows 10 for Yamaha keyboards either, if others have success please let us know:
http://download.yamaha.com/usb_midi/