ERROR_INVALID_ADDRESS - 487 (0x1E7)

Attempt to access invalid address. Requirements Expand table Requirement Value Minimum supported client Windows XP [desktop apps only] Minimum supported server Windows Server 2003 [desktop apps only] Header WinError.h (include Windows.h) See also System Error Codes Last updated on 07/14/2025

Updated: Feb 21, 2026

Technical Background

The ERROR_INVALID_ADDRESS error code is a specific Windows API error that indicates an attempt to access memory at an invalid address. This error typically arises when the operating system detects an improper or incorrect parameter passed to a function, leading to an invalid memory reference.

Error Details

  • Error Name: ERROR_INVALID_ADDRESS
  • Numeric Code: 487 (0x1E7)
  • Short Description: Attempt to access an invalid address.
  • Minimum Supported Client: Windows XP [desktop apps only]
  • Minimum Supported Server: Windows Server 2003 [desktop apps only]
  • Header File: WinError.h

Common Causes

The ERROR_INVALID_ADDRESS error is commonly caused by the following scenarios:

  • Passing an invalid memory address to a function.
  • Attempting to access a memory location that does not exist or has been freed.
  • Incorrect parameter values passed to API functions, leading to improper memory references.

Real-World Context

This error can occur in various contexts where memory operations are performed. For example, it might be encountered when working with file I/O operations, network programming, or any scenario involving direct memory manipulation through APIs.

Is This Error Critical?

The criticality of this error depends on the context in which it occurs. In most cases, it is not a catastrophic failure but rather an indication that the application has attempted to perform an invalid operation. However, if left unaddressed, such errors can lead to system instability or crashes.

How to Diagnose

To diagnose this error, consider the following steps:

  • Review Operation Context: Ensure that all memory operations are performed within valid address ranges.
  • Validate Parameters: Verify that all parameters passed to API functions are correct and valid.
  • Confirm Object Types: Ensure that the object types being manipulated are appropriate for the operation.
  • Verify Input Data: Check that input data is not corrupted or invalid, which could lead to improper memory references.

How to Resolve

To resolve this error, take the following actions:

  • Correct Parameter Usage: Ensure all parameters passed to API functions are valid and within expected ranges.
  • Adjust Operation Context: If the operation context is incorrect, adjust it to ensure proper memory usage.
  • Restore Data: If data corruption is suspected, restore or reinitialize the affected data structures.
  • Retry Operation with Valid Inputs: Attempt to perform the operation again using valid inputs.

Developer Notes

Developers should be cautious when working with memory operations and ensure that all parameters passed to functions are validated before use. This can prevent such errors from occurring and improve overall application stability.

Related Errors

  • ERROR_INVALID_PARAMETER: Occurs when an invalid parameter is passed to a function, which may lead to the same symptoms as ERROR_INVALID_ADDRESS.
  • ERROR_ACCESS_VIOLATION: Indicates that the system attempted to access memory in such a way that it caused a fault or crash.

FAQ

Q: What does ERROR_INVALID_ADDRESS mean?

A: It indicates an attempt to access an invalid address, usually due to incorrect parameters passed to API functions.

Q: How can I prevent this error from occurring?

A: Validate all memory addresses and parameters before passing them to API functions. Ensure that the operation context is correct and that data integrity is maintained.

Summary

The ERROR_INVALID_ADDRESS error code is a specific indication of an attempt to access invalid memory addresses in Windows applications. It is crucial for developers to understand this error and take appropriate measures to prevent it, ensuring robust and stable application behavior.