---
title: "Application crashes when running under AAV"
description: "Fix stack overflow crashes under AAV caused by Trellix (McAfee) Exploit Prevention."
product: "Alchemy"
edition: "Public"
type: "overview"
url: "https://docs.cloudhouse.com/public/troubleshooting-packages/aav/application-crashing-if-running-under-aav/"
---
# Application crashes when running under AAV

**Problem**: Application Running Under AAV Crashes with Stack Overflow Exception Code if the Trellix Endpoint Security Feature (previously called the McAfee Exploit Protection Feature) is enabled.

Applies to: `Alchemy`

**Steps to Replicate**: Attempt to run an application under AAV. If the above criteria is met, the application crashes and the following error is displayed in the AAV log: '6784, 6608, ERROR, AAV INTERNAL, Stack overflow in w3wp.exe; are your static buffers too big?'.

!!! note

    If you are running a Windows service under AAV, the application will start then suddenly stop. In the Windows Application Event Log, the following error is logged: 'Event ID 1000 Source: Application Error and contain text in message Exception code: 0xc00000fdOO'.

**Workaround**: This is a known issue that we are assessing to determine the number of affected customers and potential fixes. To work around this issue, create an exclusion in Trellix Endpoint Security to prevent the application from crashing. For more information, see the Trellix Endpoint Security article, '[Managing Exploit Guard features with Endpoint Protection Platform](https://kcm.trellix.com/corporate/index?page=content&id=KB92515)'.

!!! note

    If you are encountering this problem, please contact your Cloudhouse Partner in the first instance (if relevant), or Cloudhouse Support for further assistance.