I am looking for Blues.io Notecard driver for USB to Serial communication with the notecard

You could take it apart, and see what chip is being used. Often USB-to-Serial doesn't require any driver beyond what is supplied with Windows.

If the above doesn't help, then you would need to reach out to the manufacturer (or run the risk of installing dodgy drivers).

I don't know if they would still support Win 8 though, since even Microsoft doesn't support it any longer. 

Can  Microsoft "USB Serial Device" drivers from 2006. Version 10.0.19041.3636 from 21/06/2006 work

I don't consider that a serious question.

Time to make some effort, and examine what chip your device contains, and then research if you can find a driver for it for your OS. Or talk to the manufacturer. Upgrade PC if that is feasible.

Basically, see the first response...

I thought Blues.io Notecard uses JSON messages. Presumably the lower level is pretty generic.

Maybe Zadig would work...

https://zadig.akeo.ie/

It's a theme. Vague one line question with no context. Answer. Reply with context that no one could have guessed from the original question. No report back of solve. Then silence, or the same question in a different area.

Yep. And most people would think twice before raising if Version 10.0.19041.3636 (precisely that version of course!) of a driver, from 18 years ago, functions on decade-old version of Windows. 

These types of drivers are usually from 'driver download sites' after trying to google search based on the driver name, in the hope that the driver works.

As you say in the best-case scenario, you open it up and have a look at the chip - but usually, you can look in the device manager and the properties of the driver that's installed, and look at the hardware IDs that's on the driver properties.

I think we have all experienced at one point or another the pain of trying to get support for a generic device we have bought to use and then finding it no longer works with the version of windows we are trying to use - some of us switch to Linux instead

Also, I realized afterward that he doesn't even need to take anything apart, since the 'notecard' is a PCB, not encased.

Crazy thing is that it's a recent product from what I can tell, so the OP is trying to go back in time and see if future tech will work for him 18 years ago.