IISExpress crash upon debug start

1
votes

When i try to start my ASP.NET application from VS (2015 or 2017) it just crash with no error in output window.

The program '[8464] iisexpress.exe' has exited with code 0 (0x0).

But Windows Event log says this:

The Module name ManagedEngineV4.0_32bit path C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\webengine4.dll returned an error from registration. The data is the error.

I have no more ideas about how to fix this. I've tried to reinstall VS, IIS, even tried to remove .net framework, change IIS settings from 32 to 64bit but no luck so far.

Any chance someone experienced similar error and found the solution? :)

P.S. Extended error log:

  • System

    • Provider

    [ Name] IIS Express

    • EventID 2293

    [ Qualifiers] 49152

    Level 2

    Task 0 Keywords 0x80000000000000

    • TimeCreated [ SystemTime] 2017-06-06T20:47:56.693031400Z
    • EventRecordID 7271
    • Channel Application
    • Computer PC
    • Security

  • EventData

    ManagedEngineV4.0_32bit
    C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\webengine4.dll
    2BEE0CC0

Binary data:

In Words

0000: C00CEE2B

In Bytes

0000: 2B EE 0C C0 +î.À

3
c#asp.netiis
Is your application using MVC 4? – Travis Acton
Did you enable 32-bit application to true in your app pool settings ? – ISHIDA
MVC 5. Yeah, i've tried 32/64 switch at app pool settings. it just provide this error instead: >The Module name ManagedEngineV4.0_64bit path C:\WINDOWS\Microsoft.NET\Framework64\v4.0.30319\webengine4.dll returned an error from registration. The data is the error. Also i've tried to create NEW black MVC Application with single View and Model - it also crash upon start. Thanks for your replies! – Max Podolskiy
can you check if your Asp.Net 4.6 have been checked in "Turn windows features on and off" under IIS -> World wide web services -> application development features ? – ISHIDA
ehm, i'm on Windows 10 Anniv Update, and it worked before, just something happend:) – Max Podolskiy

3 Answers

1
votes

I know this is an old thread, but this has been killing me today. And since this is pretty much teh top thread on any search for the error, i decided to add this.

taken from here "Unable to launch the IIS Express Web server" error

  1. Delete folder IISExpress from "My Documents"
  2. Load your project again, it will create IISExpress folder again with updated configuration
  3. Check IISExpress folder has sufficient permissions to read-write the configuration file
  4. Load project again and Run IISExpress. It should work.

I didn't need to check any permissions or anything, just deleting and reloading the project was enough for IIS to behave itself and i could get back to some debugging fun.

Cheers

0
votes

After couple of days spent trying to solve the problem, i didn't succeed, so here is quick workaround:

  1. Uninstall of IISExpress v10
  2. Install IISExpress v8

And everything works just fine

0
votes

We encountered this same problem and event viewer error using IIS. For us the problem was we were modifying C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Aspnet.config to apply some garbage collection improvements, and ended up with a typo in the XML.

So not related to IIS Express, but thought I'd mention it for others who find this post when searching for the error message:

The Module name ManagedEngineV4.0_64bit path C:\windows\Microsoft.NET\Framework64\v4.0.30319\webengine4.dll returned an error from registration. The data is the error.