.NET migration and support

End of support of .NET versions, preparing and carrying out a migration to .NET 10.

.NET 8 end of support on November 10, 2026: what should you do with your application?

4 November 2026

On November 10, 2026, .NET 8 and .NET 9 stop receiving security patches. Your application keeps running, but Microsoft will no longer fix new vulnerabilities. What changes, the three options, and where to start the migration to .NET 10.