Cannot start the application because of partially missing MSVC CRT DLLs on Windows 10 x64

[Anton-V-K]

Description

The application fails to start on Windows 10 x64

Steps to Reproduce

1. Install latest version on a clean Windows 10 64-bit (10.0.18362 Build 18362) without installed updates.
2. Run the application.

Expected behavior: The application should start.

Actual behavior: The application fails to start because of missing VCRUNTIME140_1.dll and MSVCP140_1.dll.

Here are the system error messages (in Russian):

---------------------------
Seg3D2.exe - Системная ошибка
---------------------------
Не удается продолжить выполнение кода, поскольку система не обнаружила VCRUNTIME140_1.dll.
Для устранения этой проблемы попробуйте переустановить программу. 

---------------------------
Seg3D2.exe - Системная ошибка
---------------------------
Не удается продолжить выполнение кода, поскольку система не обнаружила MSVCP140_1.dll.
Для устранения этой проблемы попробуйте переустановить программу. 

Similar issue(s): May be related to #397

Versions

Application: Seg3D v2.5.1 for Windows 64-bit
OS: Windows 10 64-bit (10.0.18362 Build 18362) without installed updates

[Anton-V-K]

Since the rest of MSVC CRT DLLs (namely concrt140.dll, msvcp140.dll, vcruntime140.dll) are already present in the application bin directory, I would try putting the missing ones (VCRUNTIME140_1.dll and MSVCP140_1.dll) into the same location.
If you share the missing DLLs, I can test to verify whether this fixes the issue.

[dcwhite]

I will work on fixing the installer, it looks like building with a newer Visual Studio is the problem. In the meantime, just google those DLL names, they can be downloaded and put in the bin folder which should fix it.

[Anton-V-K]

Thanks for looking into this.
I guess, all DLLs should belong to the same CRT version (14.16.27012), and I doubt it will be easy to find DLLs separately - they are usually deployed as a bunch by vcredist_x64.exe or vcredist_x86.exe.
Anyway I looked into directories of VS2017 (I have it installed on one of my PCs), and found (at the location like C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Redist\MSVC\14.16.27012\x64\Microsoft.VC141.CRT) following DLLs:

• concrt140.dll
• msvcp140.dll
• msvcp140_1.dll
• msvcp140_2.dll
• vccorlib140.dll
• vcruntime140.dll

It's strange that VCRUNTIME140_1.dll isn't there.
Looking at the dependencies of the application, I see that only Qt's DLLs (qwindows.dll, QT5WIDGETS.DLL, QT5GUI.DLL, etc.) are linked against VCRUNTIME140_1.dll, so I guess, the bundled Qt binaries are linked against VS2015's CRT, and the app is linked against VS2017's CRT... well, it looks like a mini "DLL hell" :)