I will fix and get your abandoned dotnet application running again

Upgraded your .NET Framework project and now it won't build?

I fix compilation errors, dependency conflicts, and configuration problems left behind by a migration, and get your application building and running properly on modern .NET.

What I fix

* Build and compilation errors after migration

* NuGet package compatibility and version conflicts

* Deprecated APIs and namespace changes

* Configuration migration from the old XML config files to the modern JSON settings format

Entity Framework 6 to EF Core, including DbContext and migrations

* Authentication and middleware setup, including legacy user migration to ASP.NET Core Identity

Migration paths

* .NET Framework 4.x to .NET 10 (also 8 if you need LTS continuity)

* EF6 to EF Core

* Windows-specific API replacements

How I work

* Minimal changes: I fix what's broken, I don't rewrite your application

* Every change documented, so the next person isn't stuck where you were

* Clear about what's in scope and what isn't, before you order

Message me before ordering so I can review your specific errors and recommend the best package for your needs.