503 “Service Unavailable” error for all apps after installing .NET Core 2.2 Runtime & Hosting Bundle for Windows

Question

I'm developing an angular 7 application with ASP.NET CORE 2.2 and when I deploy it in IIS 8.5 which is a Windows Server 2012 R2, all the web applications host in IIS gives 503 Service Unavailable error and error goes away when I uninstall .NET Core 2.2 Runtime & Hosting Bundle

When I check the event view it shows me the following error:

A listener channel for protocol 'http' in worker process '<ProcessId>' serving application pool '<ApplicationPoolName>' reported a listener channel failure.

Tried online and it was not success anyone has any solution?

https://learn.microsoft.com/en-us/aspnet/core/host-and-deploy/iis/ did you have VC runtime installed as required? — Lex Li, Feb 27 '19 at 13:47
Check Windows event log and there should be relevant entries. — Lex Li, Feb 27 '19 at 15:30
Yes, please check your event viewer. Please also read this blog http://dotnet4hosting.asphostportal.com/post/How-to-Publish-ASPNET-Core-2.aspx — Mark Spencer, Feb 28 '19 at 08:51
@Oshadha I know this is an older issue, but were you able to run your .net core app just by executing the API's exe? — vidriduch, Jul 03 '19 at 07:19

Oshadha · Accepted Answer · 2020-05-19T09:22:20.600

It took me more than one day to find a solution for this. Before you install ASP.NET Core/.NET Core: Runtime & Hosting Bundle (latest versions), you need to ensure you have installed Microsoft Visual C++ 2015 Redistributable. in the system.

Installation(ASP.NET Core/.NET Core: Runtime & Hosting Bundle) doesn't say anything if Microsoft Visual C++ 2015 Redistributable is missing.

This helped to fixed the issue that I had. Hope this will help you.

503 “Service Unavailable” error for all apps after installing .NET Core 2.2 Runtime & Hosting Bundle for Windows

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