I’m working on a project which has been developed in Microsoft Visual Studio, an older version, I am now using:

Microsoft Visual Studio Professional 2022
Version 17.8.6
VisualStudio.17.Release/17.8.6+34525.116
Microsoft .NET Framework
Version 4.8.09037

Installed Version: Professional

Visual C++ 2022   00483-10700-98667-AA358
Microsoft Visual C++ 2022

ADL Tools Service Provider   1.0
This package contains services used by Data Lake tools

ASA Service Provider   1.0

ASP.NET and Web Tools   17.8.358.6298
ASP.NET and Web Tools

Azure App Service Tools v3.0.0   17.8.358.6298
Azure App Service Tools v3.0.0

Azure Data Lake Tools for Visual Studio   2.6.5000.0
Microsoft Azure Data Lake Tools for Visual Studio

Azure Functions and Web Jobs Tools   17.8.358.6298
Azure Functions and Web Jobs Tools

Azure Stream Analytics Tools for Visual Studio   2.6.5000.0
Microsoft Azure Stream Analytics Tools for Visual Studio

C# Tools   4.8.0-7.23572.1+7b75981cf3bd520b86ec4ed00ec156c8bc48e4eb
C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Common Azure Tools   1.10
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Cookiecutter   17.0.23262.1
Provides tools for finding, instantiating and customizing templates in cookiecutter format.

Extensibility Message Bus   1.4.39 (main@e8108eb)
Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.

GitHub Copilot   1.137.0.0 (v1.137.0.0@2f127d06d)
GitHub Copilot is an AI pair programmer that helps you write code faster and with less work.

GitHub Copilot Agent   1.137.0

Linux Core Dump Debugging   1.0.9.34525
Enables debugging of Linux core dumps.

Microsoft Azure Hive Query Language Service   2.6.5000.0
Language service for Hive query

Microsoft Azure Stream Analytics Language Service   2.6.5000.0
Language service for Azure Stream Analytics

Microsoft Azure Tools for Visual Studio   2.9
Support for Azure Cloud Services projects

Microsoft JVM Debugger   1.0
Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines

Mono Debugging for Visual Studio   17.8.17 (957fbed)
Support for debugging Mono processes with Visual Studio.

Node.js Tools   1.5.50908.1 Commit Hash:c294679b821c4b8f7f9c6db3827b7655db80fc28
Adds support for developing and debugging Node.js apps in Visual Studio

NuGet Package Manager   6.8.0
NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/

Python - Profiling support   17.0.23262.1
Profiling support for Python projects.

Python with Pylance   17.0.23262.1
Provides IntelliSense, projects, templates, debugging, interactive windows, and other support for Python developers.

Razor (ASP.NET Core)   17.8.3.2405201+d135dd8d2ec1c2fbdee220e8656b308694e17a4b
Provides languages services for ASP.NET Core Razor.

SQL Server Data Tools   17.8.120.1
Microsoft SQL Server Data Tools

Test Adapter for Boost.Test   1.0
Enables Visual Studio's testing tools with unit tests written for Boost.Test.  The use terms and Third Party Notices are available in the extension installation directory.

Test Adapter for Google Test   1.0
Enables Visual Studio's testing tools with unit tests written for Google Test.  The use terms and Third Party Notices are available in the extension installation directory.

ToolWindowHostedEditor   1.0
Hosting json editor into a tool window

TypeScript Tools   17.0.20920.2001
TypeScript Tools for Microsoft Visual Studio

Visual Basic Tools   4.8.0-7.23572.1+7b75981cf3bd520b86ec4ed00ec156c8bc48e4eb
Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.

Visual C++ for Linux Development   1.0.9.34525
Visual C++ for Linux Development

Visual F# Tools   17.8.0-beta.23475.2+10f956e631a1efc0f7f5e49c626c494cd32b1f50
Microsoft Visual F# Tools

Visual Studio IntelliCode   2.2
AI-assisted development for Visual Studio.

VisualStudio.DeviceLog   1.0
Information about my package

VisualStudio.Mac   1.0
Mac Extension for Visual Studio

VSPackage Extension   1.0
VSPackage Visual Studio Extension Detailed Info

Xamarin   17.8.0.157 (d17-8@8e82278)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.

Xamarin Designer   17.8.3.6 (remotes/origin/d17-8@eccf46a291)
Visual Studio extension to enable Xamarin Designer tools in Visual Studio.

Xamarin.Android SDK   13.2.2.0 (d17-5/45b0e14)
Xamarin.Android Reference Assemblies and MSBuild support.
    Mono: d9a6e87
    Java.Interop: xamarin/java.interop/d17-5@149d70fe
    SQLite: xamarin/sqlite/3.40.1@68c69d8
    Xamarin.Android Tools: xamarin/xamarin-android-tools/d17-5@ca1552d

I’ve cleaned the project and rebuilt everything, however when I try to debug, I am seeing the breakpoints I want enabled instead of a solid red dot, a red outline with an exclamation bottom right. If I click on the icon I see:

The breakpoint will not currently be hit. A copy of FrmName.cs was found in ModuleCS.exe, but the current source code is different from the version built into ModuleCS.exe.
To allow this breakpoint to be hit: hover over the breakpoint, click the 'Settings...' button that appears, then click 'Location','Allow the source code to be different from the original.'
To allow this for all breakpoints; disable the option 'Require source files to exactly match the original version' under Tools, Options, Debugging, General.

I’ve tried the recommendations and the problem hasn’t gone away, as I said I’ve cleaned everything, then rebuilt.

Can anyone help?