---
title: "Copilot .Net modernization tool a 'huge downgrade,' devs say – and no longer free • DEVCLASS"
url: https://daily.dev/posts/copilot-net-modernization-tool-a-huge-downgrade-devs-say-and-no-longer-free-devclass-8yiz6udgr
source_url: https://devclass.com/2025/11/20/copilot-net-modernization-tool-a-huge-downgrade-devs-say-and-no-longer-free/
type: article
source: "DEVCLASS"
published: 2025-11-20T14:37:27.589Z
updated: 2025-11-20T14:37:48.400Z
tags: ["microsoft", "github", ".net", "visual-studio"]
reading_time: 4
upvotes: 25
comments: 5
language: en
---

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# Copilot .Net modernization tool a 'huge downgrade,' devs say – and no longer free • DEVCLASS

**[DEVCLASS](https://daily.dev/sources/devclass)** · 4 min read · 25 upvotes · 5 comments

## Summary

Microsoft replaced the free .NET Framework upgrade assistant with GitHub Copilot app modernization, requiring a paid subscription. Developers report the new AI-powered tool is inferior to its predecessor, with issues including incomplete migrations, hundreds of hours of manual fixes, and less deterministic results. The old upgrade assistant remains accessible through Visual Studio settings, while Microsoft also introduced Managed Instance on Azure App Service for applications that cannot easily migrate to modern .NET.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://devclass.com/2025/11/20/copilot-net-modernization-tool-a-huge-downgrade-devs-say-and-no-longer-free/>

## Community discussion

Top comments from developers on daily.dev.

**@fabianletsch** · 11 upvotes

> Microsoft: You are going to use AI everywhere if you want to or not
>
>
>
> ![1000092075](https://media.daily.dev/image/upload/s--X4jCRHRO--/f_auto/v1764444534/ugc/content_e8e78fee-6c86-470d-a487-8bae75400399?_a=BAMAK+ZW0)

**@fabianletsch** · 6 upvotes

> Lets replace the C# compiler with a copilot C# to byte code AI Agent, too!

**@alfajordev25** · 2 upvotes

> Man you got to be kidding me, enshittification at it's finest.

**@sevensolutions** · 1 upvotes

> I think "less deterministic" is the main problem here. Iam using AI at the moment for migrating some XML files to a C# based DSL and sometimes get pretty good results but then i tell the AI to do the exact same thing with the next file and get absolutely nonsense.. And then iam frustrated 🙈

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Tags: [#microsoft](https://daily.dev/tags/microsoft), [#github](https://daily.dev/tags/github), [#.net](https://daily.dev/tags/.net), [#visual-studio](https://daily.dev/tags/visual-studio)

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