ReactJs.NET and server side rendering with V8 throws exception in production -

I am using ReactJs.NET in a ASP.NET MVC 4 project. I have disabled the fallback to MSIE javascript engine by specifying this in my ReactConfig.cs that is called on app start:
This works on my developer machine but not in production. The exception that is thrown is:
Failed to initialise ClearScript V8. This is most likely caused by the native libraries (ClearScriptV8-64.dll and v8-x64.dll) missing from your app's Bin directory, or the Visual C++ runtime not being installed
I have ensured that the ClearScript.V8 folder (with ClearScriptV8-64.dll and v8-x64.dll) is copied across to the production server and the bin folder so I am currently looking at whether the Visual C++ runtime is missing or not. I downloaded and installed the Visual C++ Redistributable for Visual Studio 2015 located here: but the same exception is thrown.
Is there something obvious I am missing here? Is it the wrong Visual C++ runtime that I have installed?

Are those DLL files in a ClearScript.V8 folder? They need to be at bin\ClearScript.V8\ClearScriptV8-64.dll for example.
Alternatively, you can try out the release candidate of ReactJS.NET 3.0, which uses a newer version of JavaScriptEngineSwitcher that changes how V8 is loaded and no longer requires the DLL files to be manually copied over. There's currently no documentation on ReactJS.NET 3.0 but it's pretty similar to the current 2.x version. I'll be working on the documentation for the final release soon.

In my case I managed to resolve this by installing the Visual C++ 2013 runtime, this was the only version that actually worked in this case. I had no luck with neither 2012 or 2015.
I found the answer here:
and the comment that helped me was:
Just another note, ClearScript 5.4.4 readme says VS2015 or 2013 C++
runtimes will work, but in my experience, it only worked when 2013's
was present.


application failed to initialize properly (0xc0150002) [duplicate]

This question already has an answer here:
The application failed to initialize properly (0xc0150002)
5 answers
my mfc application created in visual studio 5 running on windows server 2000 sp4, i create a release for it and try running it win xp slp2. it gives me application failed to initialize properly (0xc0150002)
i have tried following things
-Install Microsoft Visual C++ 2005 SP1 Redistributable Package (x86) the one that comes within the release folder as well as one downloadable from website
copied all dll and mainfest from microsoft visual sutdio\vc\redist
I still keep receiving the same messsage. c
what could be wrong?how can i fix it
some things to check:
check the /SUBSYSTEM linker option for you project. It might include OS major/minor version numbers.
ensure that you are using appropriate Windows XP PlatformSDK on DEV machine; check values of WINVER, _WIN32_WINNT
use depends to see whether the problem is in unresolved dependencies
check the version of runtime that your application requires with that on target machine. I usually do this by looking at the app's manifest from one side and into WinSxS folder of the target machine from another (recently there had been an ATL Security update from Microsoft; new binaries created by updated Visual Studio will not run on machines that haven't the same updated version of runtime).
It is possible you have applied a security update or compiler update to your VS2005 SP1. That makes it generate a manifest that requests a different MFC/CRT-dll than the one installed with Microsoft Visual C++ 2005 SP1 Redistributable Package (x86) .
Try to use Depends.exe and open your application, then in the menu choose "Profile". Look in the output window below for a more detailed description.
Are you trying to run the debug version? That may give you an error similar to 0xc0150002. Try the release build, or you could compile against the static libraries rather than dynamic libraries. If you get this problem on a release build then the chances are that it's a missing dll (in which case try running Depends.exe) or an incorrect manifest.
If you have a missing dependency on a runtime dll you could try creating a deployment project for it as this will detect the appropriate runtime dlls and build it into an installer for you.

Oracle OCI.dll statically links to MSVCR100.dll - will it work with Visual Studio 2015?

Our (native) C++ app accesses an Oracle Database through OCI. (not OCCI)
We're currently compiling on VS2010. We want to migrate our code base to VS2015, and while it seems implied that OCI should work there, I noticed that the 12c Version of the OCI.dll statically links to MSVCR100.dll, which is the dynamic CRT lib of Visual Studio 2010.
Should I expect OCI 12c (Instant Client) access to work through a native C++ app compiled with the VS2015 toolset? (Or any Visual-C++ version newer that 2010, really.)
Our app would use the MSVCR* libs of 2015, and the OCI.dll would continue to ose the MSVCR100, which is not a problem in principle.
Disclaimer: Personally, I'd say: hell yes, sure it should work, but I can't find any official support statement (probably temporary search blindness), and I'm not really fluent with the full OCI API so I'm not sure whether there are corner cases where invalid stuff could be passed.

Fixing the “MSVCP110D.dll is missing from your computer” issue

I am facing the following (fairly common) problem: I am running my program in Debug mode in VS2010 and/or VS2012, but at startup it crashes, saying:
The programme can't start because MSVCP100D.dll is missing from your
computer. Try reinstalling the program to fix this problem.
Now I found a number of possible solutions, but none of them work for me:
Compile with /MTd instead of /MDd: actually this does solve the problem, but I am not allowed to: my program is part of a bigger program, and /MD[d] is mandatory.
Install the VS 2010 Redistributable package: This doesn't work because I have VS 2012 installed, so this installer tells me: "A newer version of Microsoft Visual C++ 2010 Redistributable has been detected on the machine."
Finding, dragging and dropping a version of MSVCP100D.dll into the correct directory: I am not dropping unknown DLLs into places where they might interfere with other things.
Last resort: reinstalling VS2010/VS2012: possible, but as it would also mean reinstalling lots of other packages and plugins I need, I'd like to avoid this if it's not absolutely necessary.
Are there any other options left?
The Visual Studio REDIST packages never deploy the DEBUG versions of the CRT files. This is by design.
With VS 2012 or later, the easiest way to deploy the DEUBG versions of the CRT is to install the "Remote Debugging Tools" package on your test machines.
For VS 2012, the latest Remote Debugging Tools package is here
For VS 2013, the latest Remote Debugging Tools package is here.
Another option is to just use application local deployment of the DLL (i.e. copy it into your app directory). Again this is only for testing purposes. For actual deployment of your application, you are required to use the non-debug versions of the CRT.
If this error is happening on your development machine, however, then you have other problems because with VS 2012 installed, you should have the VS 2012 DEBUG CRT on that machine.
UPDATE:: Sorry, I would have expected the debug CRT DLLs to be included in the remote debugging tools package along with the remote debugger bits and the Direct3D 11 Debug Device. Alas, it's not. See Preparing a Test Machine To Run a Debug Executable. You have to either use the MSMs in Program Files (x86) directory in \Common Files\Merge Modules or copy the DLL-side-by-side from Program Files (x86) directory in \Microsoft Visual Studio <version>\VC\redist\Debug_NonRedist\. The VS Team probably assumed you would have already been doing that, but I'll suggest to them to roll it into the remote tools package.
I had a similar issue (the project made in VS 2012 but I was running VS2013) and resolved it by:
Open the project (or the solution ) in VS2013(or the newer one)
Open Project menu and select "Retarget the project" option (it was the first option but after applying it, this option vanished).
Rebuild your solution.
I am new to openCV and C++ and had the same problem using openCV 2.4.10 with Visual Studio Express 2013 on a Windows 7, 32-bit platform. If I made a simple program without using OpenCV, the program ran but when I used OpenCV I got the missing DLL error.
This post made things clear:
I guess the problem I had was not with my Visual Studio but my OpenCV. The OpenCV was compiled on a version of visual studio which required MSVCP110.dll. I could have tried another version of OpenCV or compiled OpenCV again using VS2013 but I was short of time. Instead, I found the dll file elsewhere and placed it in my system32 folder (not sure if that's recommended). This fixed the problem. However as #slater mentioned, I won't recommend downloading the dll from external website due to security issues.
This is a debug runtime DLL. If (and ONLY if!) you just want to run the debug build of your own application on a system without Visual Studio installed, then you can find the missing DLLs in
C:\Windows\System32 (for 64-bit builds)
C:\Windows\SysWOW64 (for 32-bit builds)
Just keep copying DLLs until your executable will run.
If this is NOT what you are trying to do, refer to, which is the CORRECT, but less practical answer.
I had the same problem, I found out that the cause is that I used dll compiled with VS2012 in a VS2013 project. JUST downloaded the missing dll and put it in my linker path and wala: the program worked. I downloaded it from
Particulars: My program was working in in release mode but not in the debug mode as it says the MSVCP110D.dll is missing. My code was an opencv image processing program. I put the missing dll in opencv linker path in the VS2013 project options.

Visual studio redistributable & side-by-side / DependentAssembly error

(I'm running Windows7 and using Visual Studio 2010.)
I'm using ClamAV in a .NET Azure project, and I'm running into side-by-side errors whenever I run clamd.exe, either through my code or by running clamd.exe on it's own.
In Visual Studio 2010 I am getting the error:
Win32Exception was unhandled The application has failed to start
because its side-by-side configuration is incorrect. Please see the
application event log or use the command-line sxstrace.exe tool for
more detail
And in Event Viewer I get:
Activation context generation failed for
Dependent Assembly
could not be found. Please use sxstrace.exe for detailed diagnosis.
When I searched for "8.0.50727.6195" it led me to the 2005 redist, so I downloaded it
After a restart I am still getting the side-by-side error. Additionally, I think that the redist installer is not completing it's install-- like it's seeing visual studio 2010 and saying "oh, that's good enough, no need for me to install". I haven't tried uninstalling 2010 and using 2005, because the rest of my Dev team is using VS 2010.
What's the deal? How can this be fixed? I'm ready to pull out my hair.
The version you mention is actually at found here
Microsoft Visual Studio 2005 Service Pack 1 MFC Security Update
The link Timores posted is the update for Visual Studio. The actual redistributable package is this:
Timores is right: the redist should be this one, which is related to this KB entry
As you can see there, msvcr80.dll has been updated to version 8.0.50727.6195.
It is the "security update" of the "SP1" of the 2005 C++ runtime..
Your exe probably requires (through an internal manifest) that specific version.
If it is not found on the system (there's a lot of places searched for) nor in the current folder (with a suitable manifest aside) it won't load the exe since it is not able to "activate the context", that is load the specific DLL required in the manifest.
I had similar issues when my system got updated (windows updates) and the newly compiled EXEs were not working with an old-versioned runtime placed on the same folder.
I had to update msvcr80.dll and its manifest (which I found deep in \windows\winsxs) to make everything work.
Context activation is a tricky matter, anyway :)

Visual C++ 2010: Changes to MSVC runtime deployment (no more SxS with manifest)

Where can I find some official note, kb article or other documentation describing changes to the Visual Studio 2010 C/C++ runtime linking and deployment policy?
Under Visual Studio 2008 (with the VC90 runtime) a manifest was embedded in native images, and the runtime libraries were deployed as side-by-side assemblies (WinSxS). This caused problems when rebuilding a native exe or library using VS 2008 SP1, in that an updated version of the C++ runtime was required by the embedded manifest.
For VS 2010 and the MSVCR100 runtime version, the policy seems to have changed completely.
The file msvcr100.dll and the other C/C++ runtime libraries are no longer install as SxS assemblies.
When compiling under VS2010, no runtime 'dependency' entry is added to the embedded manifest, meaning that any version of msvcr100.dll might be loaded at runtime.
On machines with .NET 4 installed, the matching runtime is named msvcr100_clr0400.dll, and won't be loaded by native code, though a copy renamed to msvcr100.dll works fine. I think this means any process with C/C++ code will always have two versions of the same C/C++ runtime loaded.
This seems to be a significant change in policy, backtracking from the SxS deployment and manifest dependencies we had under VS 2008. Could anyone shed more light on what changed, and perhaps point to some documentation, a readme or blog post that describes these changes, the motivation and related impact?
It think it's better this way - the strong version manifest and SxS deployment was a nightmare - but I'm surprised at these unexpected and seemingly undocumented changes in VS 2010.
Bonus question: How can I compile my C++/CLI library under VS 2010 to link to msvcr100_clr0400.dll instead of msvcr100.dll? This idea is that the C++/CLI assembly should run with no dependencies other than that installed by .NET 4 (without static linking).
You already answered most of your question, the side-by-side deployment of the CRT was a nightmare that got way too many programmers in trouble. Microsoft agreed and gave up on it for the VS2010 release. It's back to a DLL in c:\windows\system32, named msvcr100.dll. And msvcp100.dll, vcomp100.dll, atl100.dll, mfc100.dll, mfcm100.dll, the other runtime support DLLs. The way it was for VS2003 and earlier editions. Now it is again the user's burden to sort out a DLL Hell problem. The person least likely to be able to do so but they do tend to have a budget to pay for support. Unlike programmers that need to get help from a free web site :)
But you can help, app-local deployment is now again enabled, you can deploy msvcr100.dll in the same directory as your main EXE. That was explicitly checked and forbidden in previous versions. App-local has some niceties, it isolates you from well-meant but unfortunate updates that break your app. Albeit that you are now yourself responsible for getting updates deployed that fix a security hole. If that's uncomfortable then deploy and rely on the copy in the system directory.
Do not try to link to msvr100_clr0400.dll, that's a private copy for use by the CLR. Much like msvcr.dll is a private copy for use by Microsoft DLLs. You don't have the .lib file you need to link to these DLLs.
Just a couple of links about the topic – I hope someone will find them useful:
Visual Studio 2010 changes for VC++ (part 5)
Visual C++ Application: How to use manifests and re-distributable assemblies?