Hi Nick

Are you using web application? the Umbraco.Web assembly is missing from bin folder or references?

Thanks,

Alex

But there are things that reference classes in the Umbraco.Web namespace. Where are they to be found?

The simplest thing I've done is to create an empty web project then pull UmbracoCms into it with NuGet. I end up with a global.asax with this in it:

<%@ Application Inherits="Umbraco.Web.UmbracoApplication" Language="C#" %>

and IIS complains that it can't load that type. So ... where is it if not in Umbraco.Web.dll?

BTW, there is no global.asax.cs. Should there be?

it's in umbraco.dll

My project doesn't have a reference to that assembly, and there isn't a copy of it on my computer.

it should be in bin folder

what Umbraco version are you using?

It isn't in the bin folder. I am using Umbraco 8.

My bin folder has a couple of Microsoft.CodeDom.Providers... files plus my project's .dll, .dll.config and .pdb, plus a roslyn folder.

Just installed v8 from nuget in Visual Studio 2017 and got an error:

Could not load file or assembly 'Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. 

Exception Details: System.IO.FileLoadException: Could not load file or assembly 'Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

Yes, I had that too. I resolved it by installing the later version of it that NuGet offers as an update.

I was having the same issue and that was happening because I has created the project with the .Net framework version 4.5 instead of use the 4.7.2

Same issue for me:

• New Empty 4.6.2 Web Application
• Install via Nuget UmbracoCMS
• Run the solution: get the "Could not load file or assembly 'Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0" etc error message.
• Upgrade that package using Nuget
• Now I get "Could not load type 'Umbraco.Web.UmbracoApplication'." error in Global.asax

Bin folder looks very empty to me (see below!)

So much for starting a new site build in Umbraco 8 this morning :-(

Minimum requirements for Umbraco v8 appears to be .Net 4.7.2

https://our.umbraco.com/documentation/Getting-Started/Setup/Requirements/

Also, ensure your Visual Studio is at least version 15.9 :-)

Success with Visual Studio 15.9.7 and creating the project with .NET 4.7.2.

Ditto - confirmed working - Visual Studio 15.9.7 and creating the project with .NET 4.7.2 from nuget.

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