Skip to content

Troubleshooting QBMapi64 Out of Memory Error: Fixations

QBMapi64 Out of Memory Error

In the realm of digital data management, QuickBooks stands as a hallmark for accounting software. However, like any intricate system, it can encounter hiccups, one of which is the dreaded “qbmapi64 Out of Memory” error. This blog delves into the causes behind this error, strategies to troubleshoot it effectively, and the significance of addressing its latent semantic indexing (LSI) keywords for a comprehensive understanding.

Understanding QBMapi64 Out of Memory Error

QBMapi64 Out of Memory Error
QBMapi64 Out of Memory Error

The QBMapi 64 Out of Memory error is a distressing encounter for QuickBooks users, often halting their workflow abruptly. This error typically surfaces when the QuickBooks Messaging Application Programming Interface (QBMapi) exhausts the allocated memory resources, causing the software to crash or freeze. Users commonly encounter this error while performing memory-intensive tasks like running reports, exporting large data sets, or working with complex transactions.

Root Causes of QBMapi64 Out of Memory Error

  1. Inadequate System Resources: Insufficient RAM or system memory can trigger the QBMapi64 Out of Memory error, especially when QuickBooks competes with other memory-intensive applications for resources.
  2. Memory Leaks: Programming glitches or memory leaks within QuickBooks or associated services can gradually consume system memory until it reaches critical levels, leading to the error.
  3. Large Data Files: Working with extensive company files, especially in multi-user environments, can strain system resources, exacerbating the likelihood of encountering memory-related errors.
  4. Outdated Software: Running outdated versions of QuickBooks or associated components may expose users to known bugs or memory management issues that have been addressed in subsequent updates.

Effective Fixes for qbmapi64 out of memory

Now, let’s explore the step-by-step troubleshooting process to address the issue of qbmapi64 out of memory error

Fixation 1- Reinstall .Net Framework on Windows

To fix the “qbmapi64 out of memory” issue by reinstalling .NET Framework on Windows, follow these steps:

  1. Uninstall .NET Framework: Open Control Panel, navigate to Programs > Programs and Features. Locate Microsoft .NET Framework, right-click, and select Uninstall. Follow the prompts to complete the uninstallation process.
  2. Download .NET Framework: Visit the official Microsoft website and download the latest version of .NET Framework compatible with your Windows version.
  3. Install .NET Framework: Once the download is complete, double-click the installer to begin the installation process. Follow the prompts to install .NET Framework on your system.
  4. Restart Your Computer: After the installation is complete, restart your computer to ensure all changes take effect.
  5. Test the Application: Launch the application that was encountering the “qbmapi64 out of memory” issue to verify if the problem has been resolved.
  6. Check for Updates: Ensure that Windows is up to date by checking for and installing any available updates through Windows Update.

Fixation 2- Utilize the QuickBooks Install Diagnostic Tool

To fix the “qbmapi64 out of memory” error using the QuickBooks Install Diagnostic Tool, follow these steps:

  1. Download the QuickBooks Install Diagnostic Tool from the official Intuit website.
  2. Once downloaded, double-click the setup file to install the tool on your computer.
  3. Launch the QuickBooks Install Diagnostic Tool by double-clicking its icon.
  4. Click on the “Scan Now” button to initiate the diagnostic process. This will scan your system for any issues related to QuickBooks.
  5. Wait for the tool to complete the scanning process. This may take some time depending on the speed of your computer and the complexity of the issues found.
  6. After the scan is complete, review the results to identify any problems related to the “qbmapi64 out of memory” error.
  7. Follow the on-screen instructions provided by the tool to fix any issues detected during the scan.
  8. Once the repair process is complete, restart your computer to apply the changes.

Fixation 3- Reinstall QuickBooks using the Clean Install Tool

To fix the “qbmapi64 out of memory” error in QuickBooks by reinstalling using the Clean Install Tool, follow these steps:

  1. Prepare: Gather your QuickBooks license information and make sure you have a stable internet connection.
  2. Download the Clean Install Tool: Visit the official QuickBooks website and download the Clean Install Tool compatible with your version of QuickBooks.
  3. Backup your data: Before proceeding, ensure you have backed up all your QuickBooks data to prevent any loss.
  4. Uninstall QuickBooks: Go to Control Panel > Programs and Features (or Apps & Features), find QuickBooks, and uninstall it.
  5. Run the Clean Install Tool: Execute the Clean Install Tool you downloaded earlier. Follow the on-screen instructions to remove any remaining QuickBooks files.
  6. Reinstall QuickBooks: After the tool finishes cleaning, reinstall QuickBooks using your installation media or download the latest version from the QuickBooks website.
  7. Activate QuickBooks: Enter your license information when prompted and activate QuickBooks.
  8. Restore data: If you backed up your data, restore it to the newly installed QuickBooks.

Fixation 4- Run QuickBooks File Doctor

To address the “qbmapi64 out of memory” error encountered while running QuickBooks File Doctor, follow these steps:

  1. Close Unnecessary Programs: Ensure you have closed all unnecessary programs and applications running in the background to free up system resources.
  2. Restart QuickBooks and Computer: Close QuickBooks and restart both QuickBooks and your computer. This can sometimes resolve memory-related issues.
  3. Update QuickBooks: Ensure you are using the latest version of QuickBooks. Check for updates and install any available updates to resolve potential software bugs.
  4. Run QuickBooks File Doctor in Compatibility Mode: Right-click on the QuickBooks File Doctor icon and select “Properties.” Under the “Compatibility” tab, check the box next to “Run this program in compatibility mode for” and select an earlier version of Windows. Click “Apply” and then “OK.”
  5. Increase Virtual Memory: Adjust your virtual memory settings by going to Control Panel > System and Security > System > Advanced system settings > Performance > Settings > Advanced > Virtual memory > Change. Here, increase the initial and maximum size of the paging file.

Fixation 5- Manually fix .NET Framework

To manually fix “.NET Framework” issues causing “qbmapi64 out of memory” error, follow these steps:

  1. Check System Requirements: Ensure your system meets the minimum requirements for the version of .NET Framework you’re using.
  2. Update .NET Framework: Download and install the latest version of .NET Framework from the official Microsoft website.
  3. Repair .NET Framework: Use the built-in repair tool provided by Windows. Go to Control Panel > Programs > Programs and Features. Select Microsoft .NET Framework and choose “Repair.”
  4. Clear Temporary Files: Remove temporary files associated with .NET Framework. Use Disk Cleanup tool to clear temporary files.
  5. Restart Your Computer: After making changes, restart your computer to apply the updates and repairs.
  6. Check for System Errors: Run System File Checker (SFC) to scan and repair system files that may be corrupted.
  7. Check for Memory Issues: Use Windows Memory Diagnostic tool to check for memory problems that could be causing the out-of-memory error.
  8. Check Event Viewer: Look for any error messages related to .NET Framework in Event Viewer and troubleshoot accordingly.

Fixation 6- Use Quick Fix My Program

To fix the “qbmapi64 out of memory” issue using the Quick Fix My Program feature, follow these steps:

  1. Identify the Issue: Understand that the error “qbmapi64 out of memory” suggests that the QuickBooks MAPI (Messaging Application Programming Interface) module has run out of memory, potentially due to resource constraints.
  2. Access Quick Fix My Program: Open QuickBooks and navigate to the Help menu. Select “Quick Fix My Program” from the options provided.
  3. Run Quick Fix My Program: Click on “Quick Fix My Program” to initiate the diagnostic and repair process.
  4. Follow On-screen Instructions: Quick Fix My Program will guide you through the steps necessary to diagnose and repair common issues with QuickBooks. Follow the on-screen instructions carefully.
  5. Restart QuickBooks: Once the repair process is complete, restart QuickBooks to apply the changes.

Fixation 7- Reinstall QuickBooks Desktop

To fix “qbmapi64 out of memory” error in QuickBooks Desktop by reinstalling, follow these steps:

  1. Uninstall QuickBooks Desktop: Go to Control Panel > Programs and Features (or Add/Remove Programs), select QuickBooks Desktop, and uninstall it.
  2. Download the latest version: Visit the official Intuit website and download the latest version of QuickBooks Desktop.
  3. Prepare for installation: Ensure you have your license information handy. Back up your company file(s) to prevent any data loss.
  4. Install QuickBooks Desktop: Double-click the downloaded installation file and follow the on-screen prompts to install QuickBooks Desktop.
  5. Re-register QuickBooks: After installation, open QuickBooks and register using your license information.
  6. Restore company file(s): If you backed up your company file(s), restore them to their original location.

Fixation 8- Rectify the Registry Editor

To rectify the “qbmapi64 out of memory” issue via Registry Editor, follow these steps:

  1. Open Registry Editor: Press Windows + R, type “regedit” and hit Enter.
  2. Navigate to the Appropriate Key: Go to “HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run”.
  3. Identify the Problematic Entry: Look for any entry related to qbmapi64 or QuickBooks that might be causing the memory issue.
  4. Backup the Registry: Before making any changes, it’s essential to back up the registry. To do this, click on “File” > “Export” and save a copy of the registry to a safe location.
  5. Modify or Delete the Entry: Right-click on the problematic entry and select “Modify” or “Delete”. If you’re unsure, it’s safer to delete it. Ensure you’re only modifying or deleting entries related to the problem.


The “QBMapi64 Out of Memory” error can disrupt productivity and cause frustration for QuickBooks users, but armed with the right knowledge and strategies, it can be effectively addressed. By understanding the underlying causes of this error and implementing proactive troubleshooting measures, users can minimize its occurrence and optimize their QuickBooks experience. Additionally, integrating relevant LSI keywords enriches the discourse, providing readers with a holistic understanding of QuickBooks performance optimization and error resolution strategies. If the issue persists, contact QuickBooks customer support for further assistance at 1.800.579.9430


What does the error “qbmapi 64 out of memory” mean in QuickBooks?

This error typically indicates that QuickBooks encountered a memory issue while trying to perform a certain task, causing it to run out of available memory resources.

How can I resolve the “qbmapi 64 out of memory” error in QuickBooks?

You can try closing other programs and processes running on your computer to free up memory. Additionally, you may need to restart QuickBooks and your computer to refresh system resources.

Will upgrading my computer’s memory help fix the “qbmapi 64 out of memory” error?

Yes, upgrading your computer’s memory (RAM) can potentially resolve this error by providing more memory resources for QuickBooks to use.

Can a corrupt company file cause the “qbmapi 64 out of memory” error in QuickBooks?

While it’s not a direct cause, a corrupt company file could contribute to memory issues in QuickBooks, potentially leading to this error.

Is there a specific task or action that triggers the “qbmapi 64 out of memory” error?

This error can occur during various tasks in QuickBooks, such as running reports, processing large transactions, or performing data-intensive operations.

How do I know if the “qbmapi 64 out of memory” error is caused by QuickBooks itself or by another program?

You can try replicating the error while only QuickBooks is running to determine if it’s solely related to QuickBooks or if other programs are contributing to the issue.

Are there any temporary workarounds for the “qbmapi 64 out of memory” error while I troubleshoot the issue?

You can try reducing the size of your company file, closing unnecessary windows or tabs within QuickBooks, or performing tasks during off-peak hours when system resources are less taxed.

Can outdated software versions contribute to the occurrence of the “qbmapi 64 out of memory” error?

Yes, using outdated versions of QuickBooks or operating systems may lead to compatibility issues and memory-related errors. Ensure you’re using the latest updates and patches.

How do I troubleshoot if the “qbmapi 64 out of memory” error persists despite trying the recommended solutions?

You may need to perform more advanced troubleshooting steps, such as repairing or reinstalling QuickBooks, checking for conflicts with other software, or consulting with .

Will optimizing QuickBooks settings help prevent the “qbmapi 64 out of memory” error?

Yes, optimizing settings such as memory allocation within QuickBooks preferences or adjusting performance settings in your operating system can help mitigate memory-related errors like this one.