QBMAPI64 Out of Memory: Troubleshooting and Solutions
                     The Ultimate Guide to Fix QBMAPI64 
Out of Memory
Are you seeking a resolution for the qbmapi64 out of memory error? This 
blog is where you will find all the possible reasons for the issue and the 
perfect way to troubleshoot it. The QuickBooks out-of-memory error usually 
happens when the QuickBooks software uses more memory than the 
system can handle or runs into memory-related issues.
The error notice states, "Not enough memory to complete this operation. 
Existing program." As a result of this out-of-memory problem, the QB 
program may freeze, crash, or display various error messages that point to 
memory loss. To fix the qbmapi64 out-of-memory problem, you must repair 
QuickBooks and uninstall and reinstall Microsoft Office 365.
If you seek expert advice through a call for verbal instructions 
before attempting to fix errors on your own, you can call 
1.833.802.0002 for this purpose.

What Could Be Causing QuickBooks' 
QBMAPI64 Error?
The qbmapi64 out-of-memory issue occurs because there isn't any free 
RAM on the system, and another application prevents it from opening. The 
following are additional causes of this memory error:
• The QuickBooks application has issues that prevent it from detecting the 
memory available on your PC.
• Your setup did not meet the system requirements for QuickBooks 2023.
• For QuickBooks to install, at least 1 GB of memory is needed; otherwise, 
this error may occur.
• You are encountering the message 'not enough space on the C disk to 
install the QuickBooks,' which could indicate that the QuickBooks 
Installer package is faulty.
Easy And Effective Troubleshooting 
for Out-of-Memory Error
QuickBooks engineers suggest the user who faces this issue reinstall 
Microsoft 365 and repair the QB program. Let us show you how to do it:
Solution: Uninstall and Reinstall the 
Microsoft 365 Using Control Panel
Use the Control Panel to uninstall Microsoft 365 or download the uninstall 
support utility if your installation is Click-to-Run or MSI.
• Go to the Control Panel. The Control Panel's opening procedure varies 
based on your Windows version.
For Windows 7
• Select Control Panel from the Start menu.
• Select Programs > Programs and Features.
• To uninstall a Microsoft 365 program, right-click on it and select 
Uninstall.
For Windows 8 or 8.1
• Select Control Panel by right-clicking on the Start button (lower-left corner).
• After choosing Programs and Features, select Uninstall from the menu by right-
clicking on your Microsoft 365 package.
For Windows 10
• Type "control panel" into the task bar's search box, then click Control 
Panel.
• To uninstall your Microsoft 365 product, select Programs > Programs and 
Features, right-click on it, and select Uninstall.
• To finish the removal, adhere to the instructions.
• Note: If Microsoft 365 isn't shown in the Control Panel, you may have a 
Microsoft Store installation type. Instead, use the Microsoft Store tab 
above and adhere to the removal instructions.
• To restore Office 365, choose the version you wish to reinstall and follow 
the instructions.
Office 2021, Office 2019, Office 2016 | Office 2013 | Office 2010 | Office 
2007; Microsoft 365
Installation process:
• Select your profile symbol located in the upper right corner. Your profile 
photo or initials may be shown on it.
• Select "View Account",  then "Office Apps."
• Select "Office Apps & Devices" and click "Install Office."
• Observe the on-screen instructions.
• Before using Microsoft 365 apps on your desktop or laptop, restart it 
after installation.
• After rebooting, try to launch Word or another Microsoft 365 program. To 
activate all apps, sign onto the application before using it.
• Now, you are prepared to utilize every Microsoft 365 app. Make sure you 
stay logged on at all times.
Now, check if the error persists; if it does, repair QuickBooks by utilizing a 
tool in the QB Tool Hub, such as the Quick Fix My program or the 
QuickBooks Install Diagnostic Tool. 
The blog describes the causes and troubleshooting of the qbmapi64 out 
of memory error. If uninstalling and reinstalling Microsoft 365 and 
repairing QB has no effect, call 1.833.802.0002 and ask the expert to 
describe your current situation. You will get the best advice and resolution 
instantly.