Here's a screenshot

There's no Win32 option. Just x86 and x64. Adding Win32 and setting platform to ARM didn't make a difference. Also identical issue in Release and Debug

The C++ Win32 project is definitely there. I have done a bit of tinkering with C++ in the past, so it's always there, though C# is my primary language used in VS.

Looks like all options are installed. The only thing C++ related that is NOT installed are the mobile development libraries.

Just a bit more info... All this earlier work was on my work computer, but that might be moot. It's got VS 2010, 2013, and 2015 on it.

I just installed on my home computer, which is a fresh install of Win10, fresh install of VS2015, and of course the arduino plugin install. Same results. No Win32 build config, with errors on Serial and analogRead().

I removed C++ libs from VS, so I could reinstall them, and I tried to create a new project without them, to see the behavior. It results in a "parameter incorrect" error with HRESULT 0x80070057. I then reinstalled the C++ libs, but it did not change anything.

Let me know what other info I can provide 

I've never used blend, so definitely not launching it with the blend shortcut.

I am certain the problem lies in the errors that it cannot find pgmspace.h, io.h and interrupt.h. What is so weird about this is that when it sows the error that it can't find the file from the include within arduino.h, and I double-click the error, it opens arduino.h, then the errors disappear from the list and it shows the error coming from USBAPI.h. After moving around a bit, the error from arduino.h shows up again.

I also just noticed that I am running IDE version 1.7.7, but 1.7 isn't an IDE choice. I downloaded that from arduino.org, not arduino.cc. After installing 1.6.5 from arduino.cc, it seems that it has solved the problem. I guess I don't understand the difference between arduino.org and arduino.cc, and why the arduino.org version number is higher. It wasn't until I was looking at the screen for configuring IDE locations, that I clicked the Download/Install IDE button and got to the arduino.cc download page.

I had the same error, nothing seemed to work.
Switching the board to something else (i.e Mega) fixed the problem, even after switching back to Uno.

Hi, I also have this problem. 
When I first create an Arduino project, everything work fine. But then after I close the project and visual studio. When next time I open the project again, it shows theses errors and can not complied.
I'm installed the latest visual micro that I downloaded from visual studio online shop.

Hi,

The problem above is that the use says he is running arduino.org 1.7 but has selected Arduino.cc 1.6 in visual micro. This is an old post pre arduino 1.8 ide where the two comes joined together again.

Can you please create a new thread in this forum and post info about your visual studio and arduino versions.

Then switch on vmicro>compiler>verbose and also "vmicro>compiler>show build properties", then build and post the output as a .txt file or email to info[at]visualmicro.com

Thanks

Thanks.

I have been trying to hard to reproduce the issue. Any guide you can give to reproducing how you ended up with a project of a different name?

What did you click to create the project?
Did the new project land with the different project name?
Did you close the project after creation without saving changes?

I think questions like these will help me understand how this can happen

Thanks

I replicated the problem by creating a project and then closing it (or the ide) but I clicked "No" to save ".vcxfilter" changes when prompted.

The next release auto saves the project after it has been created so that this can't happen anymore.

Thanks again for the report.