This guide is designed to help you resolve the crash error: "ansyswbu.exe encountered a problem. A diagnostic file has been written."
This error typically occurs when launching Ansys Workbench or performing specific operations within it. It usually indicates issues with configuration files, graphics drivers, or corrupted installation files.
Follow the steps below in order to resolve the issue.
If your analysis is large, Windows may run out of page file space.
Set custom paging file size to 1.5× your RAM (e.g., 32 GB RAM → 48 GB min/max).
Why it happens: Some antivirus programs (especially McAfee, Symantec, or CrowdStrike) flag ansyswbu.exe behavior as suspicious—particularly when it writes temporary files or executes solver subprocesses. This guide is designed to help you resolve
How to identify: The problem started after a security software update. Error may appear inconsistently.
Solutions:
Try to determine if the crash is:
The error "ansyswbu.exe encountered a problem. A diagnostic file has been written" is intimidating but rarely catastrophic. In most cases, it stems from a limited number of causes: memory exhaustion, graphics driver issues, project corruption, or security software conflicts. If your analysis is large, Windows may run
By learning to locate and interpret the diagnostic file, following the structured troubleshooting workflow, and implementing preventive practices, you can reduce crash frequency and recover quickly when failures occur. Remember that ANSYS, Inc. provides excellent support when provided with the diagnostic files—so never delete them immediately.
If you encounter this error repeatedly despite following the steps above, consider evaluating your workstation specifications against ANSYS’s hardware requirements, and ensure you are running a certified graphics driver configuration. Simulation stability begins with a stable foundation.
Last updated: For ANSYS Workbench releases 2022 R1 through 2025 R1. Always consult the ANSYS Customer Portal for release-specific known issues and hotfixes.
Encountering the Ansyswbu.exe Error: A Comprehensive Analysis and Diagnostic Approach Last updated: For ANSYS Workbench releases 2022 R1
The sudden appearance of an error message stating that "ansyswbu.exe encountered a problem" can be quite disconcerting, especially for users deeply engaged in critical simulations or analyses using Ansys software. This error not only interrupts workflow but also raises concerns about data integrity and software reliability. The creation of a diagnostic file in such instances is a standard procedure aimed at helping users and software developers identify, diagnose, and potentially resolve the issue at hand. This essay provides a detailed overview of the Ansyswbu.exe error, its possible causes, and steps for troubleshooting and mitigation.
Why it happens: Failed updates, manual deletion of files, or registry issues.
How to identify: Multiple users on the same machine experience the crash. Even simple operations cause failure.
Solutions:
The diagnostic file mentioned in the error message is typically written to your Windows temporary folder (e.g., %temp%). While the file itself is highly technical, the error generally stems from one of the following: