Ambiguous symbol. Build Error

anonymous_user_dcda877b1 · July 27, 2016, 9:38pm

I am having a lot of problems to build my game with Development target. I can build it without problems for editor, but I want to package it, so i am trying to Build it with Development target. I am using unreal 4.12.5

When I build, this errors appear:

I tried to clean and rebuild, try another versions of the engine. Tried to engine with binaries and the one downloaded from source. I tried in 3 different computers. I created a blank project and paste the assets but nothing works, always this errors. This errors generate a MSB3075 error.

this is the log for the errors:

1>C:\Program Files (x86)\Windows Kits\10\include\10.0.10240.0\ucrt\corecrt_terminate.h(33): error C2872: 'terminate_handler': ambiguous symbol
1>  C:\Program Files (x86)\Windows Kits\10\include\10.0.10240.0\ucrt\corecrt_terminate.h(18): note: could be 'void (__cdecl *__cdecl terminate_handler)(void)'
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\exception(192): note: or       'std::terminate_handler'
1>C:\Program Files (x86)\Windows Kits\10\include\10.0.10240.0\ucrt\corecrt_terminate.h(34): error C2872: 'terminate_handler': ambiguous symbol
1>  C:\Program Files (x86)\Windows Kits\10\include\10.0.10240.0\ucrt\corecrt_terminate.h(18): note: could be 'void (__cdecl *__cdecl terminate_handler)(void)'
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\exception(192): note: or       'std::terminate_handler'
1>C:\Program Files (x86)\Windows Kits\10\include\10.0.10240.0\ucrt\corecrt_terminate.h(37): error C2872: 'terminate_handler': ambiguous symbol
1>  C:\Program Files (x86)\Windows Kits\10\include\10.0.10240.0\ucrt\corecrt_terminate.h(18): note: could be 'void (__cdecl *__cdecl terminate_handler)(void)'
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\exception(192): note: or       'std::terminate_handler'
1>C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\eh.h(35): error C2872: 'unexpected_handler': ambiguous symbol
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\eh.h(19): note: could be 'void (__cdecl *__cdecl unexpected_handler)(void)'
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\exception(193): note: or       'std::unexpected_handler'
1>C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\eh.h(36): error C2872: 'unexpected_handler': ambiguous symbol
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\eh.h(19): note: could be 'void (__cdecl *__cdecl unexpected_handler)(void)'
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\exception(193): note: or       'std::unexpected_handler'
1>C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\eh.h(39): error C2872: 'unexpected_handler': ambiguous symbol
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\eh.h(19): note: could be 'void (__cdecl *__cdecl unexpected_handler)(void)'
1>  C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\exception(193): note: or       'std::unexpected_handler'

I do not know what to do. I can not even overwrite those files:

‘eh.h’ and ‘corecrt_terminate.h’

My machine says that I have denied access to that path. Please help…

Sean_L · July 28, 2016, 2:07pm

Hello,

I have a few questions:

Are you able to successfully build a clean project?
Are you able to package the project through the editor using File->Package Project?
Do you have administrative privileges while running Visual Studio? Have you tried running as administrator?

Thanks!

anonymous_user_802c67ad · July 29, 2016, 10:26pm

I appear to be having the same problem, and my answer to this:
Yes, I can build a clean project.
No, I cannot package the project using file->package project.
Running as administrator does not solve the issue in VS, or anywhere.

anonymous_user_dcda877b1 · July 29, 2016, 11:53pm

Ok, i fixed it. It was a problem of circular dependencies. I dont know why it was working in 4.9.2, but now it doesnt.

Check your include files and fix that circular dependencies. It should work.

anonymous_user_802c67ad · July 30, 2016, 12:06am

Dang. No circular dependencies here.

Nonlin · March 6, 2019, 6:36pm

I’m noticing this with 4.19.2 with updated Visual Studio, what gives? The answers above give me no insight as to the exact problem and current solution.

Nonlin · March 18, 2019, 9:02pm

Solution for me was to remove one of my two string includes.
I had

#include <string.h>

and

#include "string.h"

didn’t notice it and it randomly decided to throw the ambiguous error because of it till I got rid of one.