Hi
I upgraded to new Windows and since then, when I fire up Sonar I get the Following:
 
- A pop up says: Installing Steinberg USB driver
 
then...
 
- A Second pop up says: Preparing to Install...
 
It stays frozen like this and nothing happens...
 
Is that it? Sonar has been killed by new Windows upgrade?
 
Please help me
 
 

You upgraded to what version of Windows?
Try turning off the hardware (?) associated with "Steinberg USB driver".
 If that progresses you further perhaps an uninstall and reinstall of the latest driver will sort it.

Thanks for the reply
I upgraded to the latest.. "Creative something...) How can I see which version of windows I have?

Ok I got it:
 
Windows 10 Family edition
 
Version 1709, 16299.192
 
...whatever that means...

Cool so what does that USB driver belong to? Hardware?

Try turning it off all the hardware before starting Sonar, if it starts attempt to see what hardware is interfering (Steinberg?)

Or you have other DAW's installed such as Cubase?

Windows didn't kill SONAR, and wouldn't be installing a vendor-specific device driver. Do you have a Steinberg audio interface? Where you using that driver before? Try going into Device Manager and disabling it. Then, assuming SONAR starts up, select the driver you were using beforehand. It should still be there.

There was a previous report just like this one.  The problem was the Yamaha Steinberg USB driver. The fix was uninstalling and assuming you have a Steinberg interface re-installing the driver.

Everybodys been demoing Cubase and finding out about the little driver they have that will install with the software if you let it.  You don't have to install it, they give you the option while installing the software, at least on the paid version you do. 
Think of it as asio4all. Some have issue with that too. 
Stienberg interfaces come with proper ASIO drivers that is a different thing. You need those.  The generic ASIO driver is because Stienberg figures a lot of people don't have interfaces so is giving them a quick fix with asio4all. I should't really cause issues. I had it on one of mine for a long time and just ignored it's existance. I thought at the time you needed it to run Cubase in ASIO until I googled it.  

Seems it does hate Sonar read this thread..
https://www.steinberg.net/forums/viewtopic.php?t=103828
 
I also found this_ what a pesky little devil...harder to kill that a cockroach- 
Rename or remove "asioglld.dll" located in Program Files/Steinberg/Asio. Back it up to be safe.
 

I do not believe Generic Low Latency Driver supplied with Cubase identifies as a USB driver. The USB driver is the ASIO driver supplied with Steinberg interfaces. Previous reports referred to UR22 and UR44 interfaces. The problem is not SONAR specific. I recently saw the same report on the VCV Rack Wiki and FB pages.