Only part of a ReadProcessMemory or WriteProcessMemory request was completed

When I went on to open an Excel sheet, I recently received this error message – Only part of a ReadProcessMemory or WriteProcessMemory request was completed. This was the first time I had seen such an error message, and I was wondering what it was all about. It appears that this error can occur when you try to open even applications like Microsoft Outlook or program installers too, apart from Office files, etc.

Only part of a ReadProcessMemory or WriteProcessMemory request was completed

Only part of a ReadProcessMemory or WriteProcessMemory request was completed

From the error message, it is apparent that this error is something related to Memory – where the operating system was unable to read or write the request completed, and this could be caused due to insufficient permissions of the user profile folders.

1] The first thing you want to do is close the error dialog and try again. Take ownership of the file and then again try once more.

Restart your PC and see if the error goes away. Sometimes many annoyances just go away after restarting the PC, as you may have noticed. Also, disable your antivirus software and see.

2] Restart Explorer and see if that works.

3] If all this does not help, check the Permissions of your User Profile folder.

Right-click on the folder > Properties > Security tab > Advanced button. Advanced Security Settings box will open up. Select Permissions tab and ensure that the permissions for folders and sub-folders are as follows:

  • System: Full control
  • Administrators: Full control
  • Users: Read & execute
  • Everyone: Read & execute

Click Apply/Exit.

4] Run Check Disk utility to check for potential disk errors. To run Check Disk using the command line, type the following and hit Enter:

chkdsk /f /r

If asked for, restart your computer.

5] If this too does not help, you may want to perform a Clean Boot, see if the problem persists and try to troubleshoot further in that state.

Let us know if you have any other ideas.

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Anand Khanse is the Admin of TheWindowsClub.com, a 10-year Microsoft MVP Awardee in Windows (2006-16) & a Windows Insider MVP. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.