IIS v6.2 for Windows Server 2012 & WebAssembly modules

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PavelVinnikov-6712 asked Apr 4, '22 LimitlessTechnology-2700 answered Apr 7, '22

IIS v6.2 for Windows Server 2012 & WebAssembly modules

Hello,

I'm trying to load some SDK module within my page. The SDK requires another .wasm module, which couldn't be loaded. It loads just fine locally, but when it comes to stage I'm getting this error:

It looks like IIS can't serve WebAssembly modules, but I did add that 'application/wasm' type to MIME types in IIS config what should make it work and it doesn't happen. I've compared both (local and stage) environments and their confings are the same. The only difference is that locally I'm using IIS for Windows 10 and on stage it's IIS for Windows Server 2012.

Can you confirm if IIS for Windows Server 2012 is able to serve .wasm files?

windows-server-iis windows-server-2012

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BruceZhang-MSFT · Apr 05 at 01:36 AM

Hi @PavelVinnikov-6712 ,

IIS cannot serve .wasm files by default, but it can be achieved by add application/wasm to MIME types. Did the url of .wasm file is right? What I mean is whether you can see mcclubone folder and click into _AFTF, Inc, PSPDFKit, pspdfkit folders to see that .wasm file through url https://sandbox.clubwise.com if enable directory browsing? And could you please check IIS log to find this record and get error status code, sub status code of it? Status code can show the reason of this error.

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Answer 1 · 2022-04-05T09:37:38.333Z

PavelVinnikov-6712 answered Apr 5, '22

Hi @BruceZhang-MSFT

Thanks for your input.

As I wrote I added 'application/wasm' type to MIME types in IIS config, but it didn't work. But as you suggested I checked folders and bingo - this has been solved. The reason was is that due to the fact that we have a complex network hierarchy and structure, the folder was copied incorrectly, hence IIS couldn't find the file that was being requested.

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BruceZhang-MSFT · Apr 06 at 01:18 AM

Hi @PavelVinnikov-6712 ,

I'm glad your issue was resolved.

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Answer 2 · 2022-04-07T11:47:33.833Z

LimitlessTechnology-2700 answered Apr 7, '22

Hi @PavelVinnikov-6712

Yes, IIS for Windows Server 2012 is a capable static file server for Blazor apps. You Need A Web. config File To Host A Blazor App In IIS.

To configure IIS to host Blazor follow this thread https://docs.microsoft.com/en-us/iis/manage/creating-websites/scenario-build-a-static-website-on-iis

Host and deploy ASP.NET Core Blazor WebAssembly
https://docs.microsoft.com/en-us/aspnet/core/blazor/host-and-deploy/webassembly?view=aspnetcore-6.0

The below thread discusses the same issue and you can try out some troubleshooting steps from this and see if that helps you to sort the Issue.

Blazor WASM on Windows 2016 Server Hosted with IIS, Authentication Token failed https://docs.microsoft.com/en-us/answers/questions/432718/blazor-wasm-on-windows-2016-server-hosted-with-iis.html

Hope this resolves your Query!!

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