Overlay injection DLLs can conflict with the game’s exception handling chain, causing a double-fault when WriteMiniDump is invoked.
The function returns true if the mini-dump file was successfully generated, and false otherwise.
Third-party anti-cheat software can hook into exception handlers. If the anti-cheat crashes or blocks memory access, the original exception cascades to Steam’s crash handler. SteamAPI WriteMiniDump
Crashes are inevitable in complex software. For game developers and modders working with the Steamworks SDK, capturing and analyzing crash dumps is essential to diagnose hard-to-reproduce bugs, memory corruption, and platform-specific failures. This publication explains SteamAPI_WriteMiniDump (and surrounding patterns) in practical terms, shows when and how to use it, and offers examples and best practices to make crash collection reliable and actionable.
Note: This article focuses on the Steamworks API function commonly used to write a mini-dump from a running process. Function names and exact signatures can vary by Steamworks SDK version; always consult the SDK headers for the precise declarations you ship with. Overlay injection DLLs can conflict with the game’s
The WriteMiniDump function is a part of the Steam API, which allows developers to generate a mini-dump file for a specific process. This guide will walk you through the purpose, usage, and implementation of WriteMiniDump in the Steam API.
The SteamAPI relies on steam_api.dll (or steam_api64.dll). If this file is missing, out-of-date, or corrupted, any call to SteamAPI_WriteMiniDump will itself crash, generating a secondary error. However, the user often sees a dialog referencing “SteamAPI WriteMiniDump” before the crash handler itself fails. If the anti-cheat crashes or blocks memory access,
When generating minidumps, memory containing user data (passwords, chat logs, personal information) may be inadvertently included. Because SteamAPI_WriteMiniDump captures a snapshot of the process memory, developers should be aware of what data resides in the heap at the time of the crash.
Steam encrypts crash dumps during transmission, but once decrypted on the developer's machine (via the Steamworks backend), the data is visible. Therefore, it is best practice to treat crash dumps as sensitive data and ensure that PII (Personally Identifiable Information) is minimized
A faulty driver can cause GPU timeouts that lead to WriteMiniDump calls.