Understanding the “Only Part of a ReadProcessMemory or WriteProcessMemory Request Was Completed” Error

When encountering an error message that states “Only part of a ReadProcessMemory or WriteProcessMemory request was completed,” it signifies an issue related to memory. This error typically occurs when attempting to open applications such as Microsoft Outlook, program installers, or various Office files. In this article, we will delve into the causes and potential solutions for this error.

Possible Causes of the Error

The “Only part of a ReadProcessMemory or WriteProcessMemory request was completed” error implies that the operating system encountered difficulties in reading or writing the requested memory. One common cause of this error is insufficient permissions for the user profile folders. To address this issue, the following solutions are recommended:

1. Taking Ownership of the File

To start, close the error dialog and attempt the operation again. Taking ownership of the file may resolve the issue. Additionally, restarting the computer or temporarily disabling antivirus software can sometimes eliminate such annoyances.

2. Restarting File Explorer

Restarting the File Explorer can also be an effective solution. By restarting this component, several related processes are initiated, potentially resolving any underlying issues.

3. Checking User Profile Folder Permissions

If the previous steps do not yield positive results, it is advisable to verify the permissions of the user profile folder. To do this:

  1. Right-click on the folder, select “Properties,” and navigate to the “Security” tab.
  2. Click on the “Advanced” button to access the Advanced Security Settings.
  3. In the Advanced Security Settings dialog box, choose the “Permissions” tab.
  4. Ensure that the permissions for folders and sub-folders are set as follows:
    • System: Full control
    • Administrators: Full control
    • Users: Read & execute
    • Everyone: Read & execute
  5. Apply the changes and exit the dialog box.

4. Running the Check Disk Utility

Running the Check Disk utility can help identify and resolve potential disk errors. To initiate the Check Disk utility via the command line, follow these steps:

  1. Open the command prompt by pressing the Windows key, typing “cmd,” and selecting “Command Prompt.”
  2. In the command prompt window, type the following command and press Enter:
    chkdsk /f /r
  3. If prompted, restart your computer to allow the utility to run during the startup process.

5. Performing a Clean Boot

If the issue persists, performing a Clean Boot can help troubleshoot further. This process allows you to start the computer with minimal drivers, services, and startup programs. Follow these steps:

  1. Press the Windows key and type “msconfig” to open the System Configuration utility.
  2. In the System Configuration window, navigate to the “Services” tab.
  3. Check the box next to “Hide all Microsoft services.”
  4. Click on the “Disable all” button to disable non-Microsoft services.
  5. Switch to the “Startup” tab and click on “Open Task Manager.”
  6. In the Task Manager window, disable all startup programs by right-clicking on each entry and selecting “Disable.”
  7. Close the Task Manager and return to the System Configuration window.
  8. Click on “Apply” and then “OK.”
  9. Restart your computer and observe if the error persists.


In conclusion, encountering the “Only part of a ReadProcessMemory or WriteProcessMemory request was completed” error can be frustrating, especially when attempting to open applications or perform specific actions on your Windows PC. However, by following the solutions outlined in this article, such as taking ownership of the file, restarting File Explorer, checking user profile folder permissions, running the Check Disk utility, or performing a Clean Boot, you can resolve this error and regain normal functionality on your system.
By addressing the underlying causes of this error and implementing the appropriate solutions, you can ensure a smoother and more efficient computing experience. Remember to apply these troubleshooting steps methodically, and do not hesitate to seek further assistance if needed.


What does the error message “Only part of a ReadProcessMemory or WriteProcessMemory request was completed” mean?

This error message indicates that there was a problem with reading or writing memory during the execution of a ReadProcessMemory or WriteProcessMemory request. It commonly occurs when attempting to open certain applications or files.

What are the possible causes of this error?

The “Only part of a ReadProcessMemory or WriteProcessMemory request was completed” error can be caused by various factors. One common cause is insufficient permissions for the user profile folders. Other potential causes include disk errors, conflicts with antivirus software, or issues with the File Explorer component.

How can I fix the “Only part of a ReadProcessMemory or WriteProcessMemory request was completed” error?

There are several solutions you can try to resolve this error:
– Take ownership of the file in question and retry the operation.
– Restart the File Explorer, which can help resolve any underlying issues.
– Check the permissions of your user profile folder and ensure they are set correctly.
– Run the Check Disk utility to identify and fix potential disk errors.
– Perform a Clean Boot to troubleshoot further by starting your computer with minimal services and startup programs.

Why do I receive an “access denied” message when I am the administrator?

The “access denied” message typically indicates that you do not have the necessary permissions to access the file or folder in question. Some programs, folders, and files are owned by the System account, which is not accessible to regular users. To resolve this, you need to add your account as a user with the appropriate permissions for the file or folder.

Why does the error message mention “read” and “write” operations?

The error message references “ReadProcessMemory” and “WriteProcessMemory” because these are common operations performed by software applications. “ReadProcessMemory” is used to read data from the memory of another process, while “WriteProcessMemory” is used to write data to the memory of another process. When these operations encounter issues, the error message is triggered.

Can disabling antivirus software help resolve this error?

Temporarily disabling antivirus software can be a troubleshooting step to determine if it is causing any conflicts with the ReadProcessMemory or WriteProcessMemory operations. However, it is important to note that antivirus software provides crucial protection for your system, so it should be re-enabled once the troubleshooting is complete.

What should I do if none of the suggested solutions work?

If none of the recommended solutions resolve the “Only part of a ReadProcessMemory or WriteProcessMemory request was completed” error, it is advisable to seek further assistance. You can consult online forums, reach out to technical support, or consider contacting a professional computer technician who can provide personalized assistance based on your specific system configuration.

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