MCB2300 Evaluation Board CDC Drivers for Win8

It seems that the Virtual Com driver doesn't support Win8.

But you stated that
was working fine but now having Drivers Issue

Naze?

Whenever you have a case that something "was" working fines, but "now" doesn't - you need to ask yourself, what changed?

You specifically state that it doesn't work with Win-8 - but you didn't mention what Windows version(s) it does work with.

You quoted the (Windows?) error message, "The Third Party INF Does not contain digital signature information"

So what have you done to investigate Win-8's requirements for "digital signature information"...?

Windows 8 will not work with unsigned drivers by default, you have to jump through some hoops to enable it to do so. Doing dev work on Windows 8, you should appreciate this?

Was Working Fine Meaning to say other versions of windows, not Win8

Was Working Fine on previous versions of windows whether x86 OR x64, not Win8. As far Digital signature concerned I didn't do at the moment. Probably you have an idea..?

So Windows-8 is different!

"As far Digital signature concerned I didn't do at the moment"

That's the difference - as the error message clearly tells you, and as another post has already pointed out.

Well. Got Solution Finally. Thanks for the Discussion and suggetions.

Here's what i did.

1. From the Metro Start Screen, open Settings
(move your mouse to the bottom-right-corner of the screen and wait for the pop-out bar to appear, then click the Gear icon).
2. Click ‘More PC Settings’.
3. Click ‘General’.
4. Scroll down, and click ‘Restart now’ under ‘Advanced startup’.
5. Wait a bit.
6. Click ‘Troubleshoot’.
7. Click ‘Advanced Options’
8. Click ‘Windows Startup Settings’
9. Click Restart.
10. When your computer restarts, select ‘Disable driver signature enforcement‘ from the list.

You can now load your modified driver. Reboot again once the driver is installed and all will be well.