.NET 8 and .NET 9 end of support: November 10, 2026
.NET 8 and .NET 9 both reach end of support on November 10, 2026. After that, Microsoft sends no security fixes for them. Microsoft says to move to .NET 10.
2 linked sources · Read the evidence.NET 8 and .NET 9 both reach end of support on November 10, 2026. After that, Microsoft sends no security fixes for them. Microsoft says to move to .NET 10.
2 linked sources · Read the evidence