Aspnetcore: Unable to run blazor app - get 502.5 error

[PhilPJL]

VS 15.8.1
Blazor 0.5.1

Create new blazor app.
Ctrl-F5 run using IIS express/Edge

I'm pretty sure I've configured IIS correctly as specified at https://go.microsoft.com/fwlink/?LinkID=808681.

The event log says

Application 'MACHINE/WEBROOT/APPHOST/WEBAPPLICATION2' with physical root 'C:\Users\xxxx\source\repos\WebApplication2\WebApplication2\' failed to start process with commandline 'c:\program files (x86)\microsoft visual studio\2017\enterprise\common7\ide\extensions\microsoft\web tools\projectsystem\VSIISExeLauncher.exe -argFile "C:\Users\xxxx\AppData\Local\Temp\tmp2D5D.tmp"', ErrorCode = '0x80004005 : 0.

Any ideas?

[danroth27]

What .NET Core SDK versions do you have installed? You can run dotnet --info to find out.

Can you try removing the global.json file from the generated project and see if that resolves the issue?

[PhilPJL]

Hi and thanks. Removing global.json fixed it.

If it's any use -

[mjganesh]

Change your version in global.json file as
{
"sdk": {
"version": "2.1.401"
}
}

[dsghi]

Bumbled around for 2 hours before I found this suggestion for deleting the global.json (changing to 2.1.401 did not help me) ... would seem logical to have that in the getting started if it's common?

[danroth27]

@dsghi Good point. https://github.com/aspnet/Blazor.Docs/pull/244. This is also fixed in 0.6.0 aspnet/Blazor#1386