应用程序池崩溃 IIS 10 ASP.Net Core 3.2 Blazor App EF Core

Question

I have an Asp.Net Core 3.2 Blazor Webassembly application that has been published to a server running Windows Server 2016 with IIS 10 .

After publishing to the server I can browse the login page to the site, However, when I attempt to login which calls a service and signs in with Entity Framework Core 3.1.5 .

However when I attempt to call a linq query on the DbContext it seems to fail (This is deduced from log files).

Interestingly, if I remote into the server whilst running a login I get a JIT popup with the following error;

In the Windows System Log can see the following error;

A process serving application pool 'myapppool(domain)(4.0)(pool)' suffered a fatal communication error with the Windows Process Activation Service. The process id was '10188'. The data field contains the error number.

It seems to sometime crashes the apppool as well so if I then refresh the page i get 502 error on the site?

Below is a screen shot of the application pool advanced settings;

The server is running Windows 2016 with Plesk Obsidian installed on it (I'm not sure if this can interfere in any way??)

Does anyone know whats going on here please?

Answer 1

I don't know what's going on since I can not reproduce your issue. Here is a workaround. Please ensure that IIS Application pool's Advanced Settings has set ” Enable 32-Bit Application ” to true .

Check below link for troubleshooting the issue.
How to diagnose IIS fatal communication error problem