bapu
Zarggy,
 
Did you upgrade to Win 10 from Win 7?
 
If so it might be easier to revert (if you did not delete the revert files). Get the Tascam drivers and legacy firewire driver working in 7 and then re-upgrade to Win 10.
 
Or you could wait to see if that works for me when I upgrade to Win 10 over Thanksgiving.
 
If for me (since I have my FW-1884 working in Win 7) Win 10 fails I will revert back to 7 until such time that I can afford a Berhinger X-Touch.

I (unfortunately) did a clean install of Win 10. I am keeping my fingers crossed that it will work in compatibility mode, one way or the other. I got my TI Firewire card installed, and Win 10 installed legacy drivers...
All the best.

Zargg71
I (unfortunately) did a clean install of Win 10. I am keeping my fingers crossed that it will work in compatibility mode, one way or the other. I got my TI Firewire card installed, and Win 10 installed legacy drivers...
All the best.

I can only imagine you'll be good to go. Maybe you'll be my guinea pig for Win10/FW-1884.

microapp
If it works with Win 8.1, it should work with Win 10.
MS released a signed legacy Firewire driver for win8/8.1 after 18 months or so of user complaints. I have used this after upgrading my PC and installing win 8.1. I suggest using this rather than the Win 7 Firewire driver if the provided Win 10 Firewire driver does not work.
You can D/L it here.
https://support.microsoft.com/en-us/kb/2970191
If you use the W7 firewire driver in W8.1 x64, you have to run Win 8.1 in the "Driver evaluation mode" since the W7 is not properly signed . This is not necessary with the newer Win 8.1 driver. 
However, I read somewhere (Cubase forum ?) that Win 10 contains the legacy driver  AND it works with FW-1884.
As far as the Tascam/Sonar driver(s), with win 8.1, I had to install in compatability mode for W7 and I assume this will be necessary for W10 as well.
I have a new SSD intended for dual boot win10/7 on my old studio PC just for evaluation. I just need to download and install. If all goes well, I can move that box back to the studio and give it a try with the FW-1884. But like Bapu, that may not happen until the holiday.
 
If I did not need a Win 10 PC for work purposes, I am not sure that I would upgrade any of my PCs (2 desktops, 3 laptops on W8.1) until I absolutely must. I am very happy with Win 8.1 and unless I see some performance improvement with Sonar/Cubase on Win 10, I would probably stick with 8.1 (on my studio PC at least).

Hi, and thanks for your feedback. Win 10 installed legacy drivers for my FW card automatically. I really hope that the 1.22 x64 SONAR plugin driver for the FW 1884 will work in compatibility mode in Win 10. After upgrading my laptop from Win 8.1, to Win 10, I just felt more comfortable afterwards. I then (on a whim) did a clean install on my studio pc, and it has been flawless ever since. Did not take into account that I would be getting the FW 1884... 
I am hopefully just a few days from knowing one way or the other. 
All the best.

bapu

Zargg71
I (unfortunately) did a clean install of Win 10. I am keeping my fingers crossed that it will work in compatibility mode, one way or the other. I got my TI Firewire card installed, and Win 10 installed legacy drivers...
All the best.

I can only imagine you'll be good to go. Maybe you'll be my guinea pig for Win10/FW-1884.

I will definetively keep you posted as I go along Lets hope it will be a pleasant experience, as I am new to being a guinea pig for things like this 

YOu have to download a patch from Win 8.   Search for it and you'll find it.   It not that straightforward and I know for a fact it won;t work out of the box.  I have FW 1884 and Win 10 did not have any legacy drivers for FW.  YOu need to get them from microsoft knowledge base and its a win 8 patch that works with 10

I had a long list of issues the minute WIn 10 came up so I said screw it and went back as there really is no real advantage to going to 10
 

stxx
YOu have to download a patch from Win 8.   Search for it and you'll find it.   It not that straightforward and I know for a fact it won;t work out of the box.  I have FW 1884 and Win 10 did not have any legacy drivers for FW.  YOu need to get them from microsoft knowledge base and its a win 8 patch that works with 10

Hi, and thanks for your feedback. Win 10 automatically installed the legacy drivers for my TI Firewire card, the moment I started my pc up after putting it in. Went straight to Device Manager to see, and there was the Legacy drivers for my FW card. I will however be cautious when setting it up. I also have downloaded the SONAR plugin, the firmware update and the drivers themselves. I will hopefully have it here in a couple of days, and know for sure.
All the best.

Yeah!! I have it up and running Tried it on a couple of existing projects, and started some new ones. I have a long way until I have it all figured out (feature wise), but I am smiling from ear to ear I will basically use it as a (volume and hopefully more) controller, and so far I am very pleased.
Thanks for chiming in, guys
All the best.

Thanks Guinea.

bapu
Thanks Guinea.

You are most welcome 
And now to learn this thing...