0x00000081 ERROR_CHILD_NOT_COMPLETE Windows Error [FIXED]

Imagine this: You’ve been working on an important document, diligently typing away on your computer, when suddenly, an error message pops up on your screen. You feel a wave of frustration wash over you as you read the words: 0x00000081 ERROR_CHILD_NOT_COMPLETE. What does it mean? And more importantly, how do you fix it?

Errors like these can be a real headache, especially when they hinder your progress and interrupt your workflow. But fear not! In this article, we will delve into the world of Win32 errors and specifically tackle the notorious 0x00000081 ERROR_CHILD_NOT_COMPLETE Windows Error. By the end of this guide, you’ll have a clear understanding of what this error means and, best of all, how to fix it.

Key Takeaways:

  • The 0x00000081 ERROR_CHILD_NOT_COMPLETE Windows Error is a common issue that can cause frustration for users.
  • This error indicates that the %1 application cannot be run in Win32 mode.
  • To troubleshoot and fix this error, you can check the compatibility of the application, update it to a compatible version, and reinstall it if necessary.
  • Ensuring that your system meets the necessary requirements and updating device drivers can also help resolve this error.
  • Regularly updating your operating system and software, scanning for malware and viruses, and maintaining ample storage space can prevent Win32 errors.

Understanding Win32 Errors

Win32 error codes are a standardized way of representing specific errors that occur in the Windows operating system. When troubleshooting Windows issues, it’s important to understand these error codes and their meanings. Here are some common Win32 error codes:

Error CodeError Description
ERROR_SUCCESSSuccessful completion of an operation
ERROR_FILE_NOT_FOUNDSystem cannot find the specified file
ERROR_PATH_NOT_FOUNDSystem cannot find the specified path

These error codes provide valuable information about what went wrong when encountering issues on your Windows system. By understanding the error codes, you can pinpoint the problem and take appropriate action to resolve it.

For example, if you encounter the ERROR_SUCCESS code, it means that a specific operation has been completed successfully. On the other hand, if you come across the ERROR_INVALID_FUNCTION code, it indicates that there is an incorrect function being used.

“I have always found it helpful to familiarize myself with Win32 error codes when troubleshooting Windows issues. They provide valuable insights into what’s causing the problem and help guide me towards a solution.” – Mark Thompson, IT specialist

When faced with the ERROR_FILE_NOT_FOUND code, it means that the system cannot locate the file specified. Similarly, the ERROR_PATH_NOT_FOUND code indicates that the system cannot find the specified path.

By having a clear understanding of these common Win32 error codes, you can effectively troubleshoot Windows issues and take the necessary steps to resolve them.


  1. Microsoft documentation on Win32 error codes
  2. Online resources on Windows troubleshooting

Common Win32 Errors and Their Meanings

When encountering issues with their Windows operating system, users may come across several common Win32 errors. Understanding the meanings of these error codes can help you effectively troubleshoot and resolve these issues. Below, we have listed three common Win32 errors along with their explanations:


    The ERROR_TOO_MANY_OPEN_FILES error occurs when the system is unable to open a file. This can happen when there are an excessive number of files open on your system, exceeding the system’s limits. To resolve this error, you can try closing some unnecessary files or applications to free up resources.


    The ERROR_ACCESS_DENIED error indicates that access to a resource or file is denied. This error commonly occurs when your user account lacks the necessary permissions to access or modify a file. To fix this error, ensure that you have the correct permissions or contact your system administrator for assistance.


    The ERROR_INVALID_HANDLE error signifies that the handle being used is invalid. A handle is a unique identifier that represents an object, such as a file or device. This error can occur when a handle is incorrectly used or has become invalid. To resolve this error, make sure you are using a valid handle and ensure proper handling of object references in your code.

By understanding these common Win32 errors and their meanings, you can effectively identify and address the underlying issues. If you encounter any of these errors, follow the troubleshooting steps specific to each error to resolve the problem.

Error CodeError NameDescription
ERROR_TOO_MANY_OPEN_FILESToo Many Open FilesThe system cannot open the specified file due to reaching the limit of open files.
ERROR_ACCESS_DENIEDAccess DeniedAccess to the specified resource or file is denied.
ERROR_INVALID_HANDLEInvalid HandleThe handle being used is invalid.

Table: Common Win32 Errors and Descriptions.

Remember, effectively troubleshooting and resolving Win32 errors requires a systematic approach and a deep understanding of the specific error codes. Armed with this knowledge, you can confidently address these errors and ensure the smooth operation of your Windows system.

Troubleshooting the 0x00000081 ERROR_CHILD_NOT_COMPLETE Error

To troubleshoot and resolve the 0x00000081 ERROR_CHILD_NOT_COMPLETE Windows Error, there are several steps you can take:

  1. Check application compatibility: Ensure that the application you are trying to run is compatible with the Win32 mode. Some applications may require an update or a different version to function properly.
  2. Update the application: If an updated version of the application is available, install it to ensure compatibility with the Win32 mode. Developers often release updates to address compatibility issues and improve performance.
  3. Reinstall the application: If the application continues to show the 0x00000081 error, consider uninstalling and reinstalling it. This can resolve any corrupted files or settings that may be causing the error.
  4. Verify system requirements: Check if your system meets the necessary requirements to run the application in Win32 mode. Insufficient system specifications can lead to compatibility issues and errors.
  5. Update device drivers: Outdated or incompatible device drivers can also cause the 0x00000081 error. Ensure that all your device drivers are up to date by visiting the manufacturer’s website or using driver update software.

By following these troubleshooting steps, you can effectively resolve the 0x00000081 ERROR_CHILD_NOT_COMPLETE Windows Error and ensure the proper functioning of your system.

Note: Troubleshooting Windows errors requires careful attention and may vary depending on specific system configurations and software versions. If the issue persists after following these steps, it is recommended to seek assistance from a qualified technician or consult online support resources.

Other Common Win32 Errors

In addition to the 0x00000081 ERROR_CHILD_NOT_COMPLETE error, there are other common Win32 errors that you may come across. These errors can cause frustration and hinder the smooth operation of your Windows system. Understanding and resolving these errors is essential to maintain the optimal performance of your computer.


The ERROR_NOT_ENOUGH_MEMORY error (code 8) indicates that there is not enough storage available to process a command. This error can occur when your system runs out of memory while executing a task. To resolve this issue, you can try closing unnecessary programs or processes to free up memory, or consider upgrading your system’s memory capacity.


The ERROR_OUTOFMEMORY error (code 14) occurs when there is not enough storage available to complete an operation. This can happen when a program or process exceeds the available memory, causing the system to be unable to allocate additional memory. To address this error, you can try closing unused applications or reducing the amount of data being processed. Additionally, increasing your system’s memory capacity may help prevent this error from recurring.


The ERROR_INVALID_DRIVE error (code 15) indicates that the system cannot find the specified drive. This can occur when you try to access a drive that is not available or does not exist. To resolve this error, make sure the drive is properly connected and accessible. If the error persists, you may need to check the drive’s compatibility with your system or consult the manufacturer for further assistance.

Error CodeError Description

Understanding and troubleshooting Win32 errors can help you address issues in your Windows system and ensure smooth operation. By resolving these common errors and taking preventative measures, you can enhance the performance and stability of your computer.

Tips for Preventing Win32 Errors

Encountering Win32 errors on your Windows system can be frustrating. However, there are steps you can take to prevent these errors and ensure a smooth experience. By following these tips, you can minimize the chances of encountering Win32 errors.

Regularly Update Your Operating System and Software

Keeping your operating system and software up to date is crucial in preventing Win32 errors. Software updates often include bug fixes and patches that resolve known issues, including compatibility problems with Win32 mode. Additionally, updating your operating system ensures that you have the latest security updates and improvements, reducing the risk of encountering errors.

Scan for Malware and Viruses

Malware and viruses can wreak havoc on your system, causing various errors, including Win32 errors. Regularly scanning your system with an antivirus program and running malware scans can help identify and remove any malicious software that may be causing conflicts or errors. It is essential to keep your antivirus software up to date to ensure it can effectively detect and eliminate threats.

Keep Your System Drivers Up to Date

Outdated or incompatible drivers can lead to Win32 errors. Device drivers are essential for the proper functioning of hardware components, and outdated drivers can cause conflicts or errors. Regularly checking for driver updates and installing the latest versions can help prevent Win32 errors related to driver issues. You can usually find driver updates on the manufacturer’s website or through Windows Update.

Properly Maintain Your Hardware

Hardware issues can also contribute to Win32 errors. Ensure that your hardware components are clean, free from dust, and properly connected. Overheating or faulty hardware can cause system instability and errors. Regularly cleaning your computer and ensuring proper airflow can help prevent Win32 errors caused by hardware problems.

Ensure Ample Storage Space

Running out of storage space can lead to various errors, including Win32 errors. Make sure you have sufficient free space on your hard drive to allow your system and applications to function properly. Regularly clean up unnecessary files, and consider upgrading your storage if you frequently encounter storage-related errors.

Regularly update your operating system and software– Fixes bugs and compatibility issues
– Enhances security
Scan for malware and viruses– Identifies and removes malicious software
– Prevents conflicts and errors
Keep your system drivers up to date– Ensures compatibility and stability
– Resolves driver-related Win32 errors
Properly maintain your hardware– Prevents hardware-related Win32 errors
– Improves system performance
Ensure ample storage space– Avoids storage-related Win32 errors
– Allows smooth system and application operation

By implementing these tips, you can significantly reduce the occurrence of Win32 errors on your Windows system. Taking proactive measures to prevent these errors will help ensure a more stable and reliable computing experience.


In conclusion, the 0x00000081 ERROR_CHILD_NOT_COMPLETE Windows Error is a common issue that can be resolved by troubleshooting and following the steps outlined in this guide. By understanding Win32 error codes and taking preventative measures, you can effectively troubleshoot and resolve the 0x00000081 Windows error.

To troubleshoot this error, make sure to check if the application is compatible with the Win32 mode and update it to a compatible version if necessary. Reinstalling the application may also help resolve the error. Additionally, keeping your system updated, scanning for malware and viruses, and maintaining adequate storage space can help prevent the occurrence of Win32 errors in the future.

By taking these steps and ensuring a well-maintained and up-to-date system, you can have a smooth and error-free Windows experience. Don’t let the 0x00000081 ERROR_CHILD_NOT_COMPLETE Windows Error hinder your productivity – troubleshoot and resolve it today!

Nilesh Kamble is Certified in Microsoft & GCP, having 13+ Years of Experience in IT Industry. As a Senior IT Employee, having vast experience on Windows Server, Windows Client, Powershell, Cloud Technologies. Passionate about Laptop, Mobiles & Other emerging Technologies.