dotnet/Documentation/compatibility/some-_net-apis-cause-first-chance-(handled)-entrypointnotfoundexceptions.md

Some .NET APIs cause first chance (handled) EntryPointNotFoundExceptions

Scope

Edge

Version Introduced

4.5

Version Reverted

4.5.1

Source Analyzer Status

Available

Change Description

In the .NET Framework 4.5, a small number of .NET methods began throwing first chance xref:System.EntryPointNotFoundException?displayProperty=names. These exceptions were handled within the .Net Framework, but could break test automation that did not expect the first chance exceptions. These same APIs break some ApiVerifier scenarios when HighVersionLie is enabled.

• Quirked
• Build-time break

Recommended Action

This bug can be avoided by upgrading to .NET Framework 4.5.1. Alternatively, test automation can be updated to not break on first-chance xref:System.EntryPointNotFoundException?displayProperty=names.

Affected APIs

• M:System.Diagnostics.Debug.Assert(System.Boolean)
• M:System.Diagnostics.Debug.Assert(System.Boolean,System.String)
• M:System.Diagnostics.Debug.Assert(System.Boolean,System.String,System.String)
• M:System.Diagnostics.Debug.Assert(System.Boolean,System.String,System.String,System.Object[])
• M:System.Xml.Serialization.XmlSerializer.#ctor(System.Type)
• Investigate applicable APIs

Category

Core

More information