SIMULATION ERROR: Exception code 0xc0000005 thrown at address XXXXXXX

If you have ever run a SOLIDWORKS Simulation study only to watch the study suddenly failed with the message:

“SIMULATION ERROR: Exception code 0xc0000005 thrown at address XXXXXXX”

You are definitely not alone. This error is one of the most common and frustrating issues faced by analysts and designers. It often appears without warning, interrupting hours of preparation and leaving users unsure where to begin troubleshooting.

The good news? This problem can be solved, and in many cases, completely prevented. Let’s take a closer look at what causes it and how you can overcome it.

🔍 What Does Exception Code 0xc0000005 Mean?

This error generally indicates that the solver attempted to access a restricted or invalid memory location, forcing SOLIDWORKS Simulation to shut down. In simpler terms, the software tried to use system resources that were unavailable or blocked.

The most frequent reasons include:

✅ Insufficient system memory
✅ Restricted memory allocation
✅ Overly complex geometry or large model size
✅ Corrupted or defective geometry
✅ Extremely fine mesh density
✅ Conflicting or unstable add-ins
✅ Outdated graphics or system drivers
✅ Incorrect or incompatible solver settings

When system resources become overwhelmed, the solver fails to complete the computation, leading to this exception.

🧠 Why Does This Happen in SOLIDWORKS Simulation?

SOLIDWORKS Simulation, especially in nonlinear, dynamic, or highly detailed studies, consumes significant computational power. Complex models with millions of elements, detailed features, or poorly defined contacts can easily exceed available memory.

If your system cannot provide the required resources, the solver will stop—resulting in the 0xc0000005 crash.

🛠️ How to Resolve the Error

Fortunately, several effective strategies can help stabilize the simulation and prevent crashes.

✅ 1. Simplify the Geometry

Remove small fillets, holes, text embossing, threads, or unnecessary internal details. These features dramatically increase mesh density and memory usage without contributing to the results.

✅ 2. Apply Mesh Control in Critical Areas

Instead of generating a uniformly fine mesh across the entire model, refine only the convergent or high-stress regions. This keeps the mesh efficient and reduces the solver load.

✅ 3. Use Shell and Beam Elements

Transforming solid bodies into:

• Shell elements for thin plates and walls
• Beam elements for slender structural components

can significantly reduce the element count while maintaining accuracy.

✅ 4. Try Different Solvers

SOLIDWORKS offers multiple solver options, including:

• FFEPlus
• Intel Direct Sparse
• Large Problem Direct Sparse

Switching solvers can resolve memory access conflicts and improve stability.

✅ 5. Disable Unnecessary Add-Ins

Add-ins consume RAM and processing power. Temporarily disabling unused ones can free up valuable resources.

✅ 6. Update Drivers and Software

Outdated GPU drivers and system components frequently contribute to instability.

💡 Pro Tips for Prevention

Here are additional best practices to avoid future occurrences:

⭐ Run a simplified test model before full simulation
⭐ Use sub-modelling technique for highly detailed zones
⭐ Verify imported geometry and repair gaps or overlaps
⭐ Increase system RAM if possible
⭐ Close background applications during simulation

Small adjustments can dramatically improve performance and reliability.

🚀 Turning a Problem into Progress

Although the “Exception code 0xc0000005” error can be discouraging, it often highlights opportunities to optimize your simulation workflow. By refining the model, improving mesh efficiency, and managing system resources more effectively, you not only eliminate errors but also achieve faster and more accurate results.

Simulation should empower innovation—not interrupt it.

Should you have any questions or need assistance, please do not hesitate to contact our support team.

Telephone        : (65) 6226 3784
Email               : support@seacadtech.com
WhatsApp       : (65) 9372 1461