---
title: "Discussion on \"IIS 503 Service Unavailable: Why the App Pool Keeps Stopping (ASP.NET Core)\" | Hashnode"
description: "Discussion on \"IIS 503 Service Unavailable: Why the App Pool Keeps Stopping (ASP.NET Core)\". HTTP Error 503. The service is unavailable on IIS? Find out why the application pool keeps stopping, read events 5002/5011, and fix it on a VPS or Plesk."
url: "https://hashnode.com/posts/iis-503-service-unavailable-why-the-app-pool-keeps-stopping-asp-net-core/6af5a1567b43f8f42533200b"
---

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# [IIS 503 Service Unavailable: Why the App Pool Keeps Stopping (ASP.NET Core)](https://knowledgemarkg.hashnode.dev/iis-503-service-unavailable-why-the-app-pool-keeps-stopping-asp-net-core?utm_source=hashnode&utm_medium=feed)

HTTP Error 503. The service is unavailable on IIS? Find out why the application pool keeps stopping, read events 5002/5011, and fix it on a VPS or Plesk.

1d ago · 14 min read · knowledgemarkg.hashnode.dev  
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## Written by

[Kausar Raza](https://hashnode.com/@knowledgemarkg)

@knowledgemarkg

  
[View profile](https://hashnode.com/@knowledgemarkg)

Freelance web developer: Next JS, ASP NET Core, site speed and technical SEO. Real errors, real fixes.

Freelance web developer building fast, search-friendly websites for small businesses in the UK, US and Europe. I work with Next JS, React and ASP NET Core, and write about the real problems I hit: Core Web Vitals, caching, IndexNow, technical SEO. Original posts and free tools at knowledgemarkg.com

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