QuickBooks QBmapi64 Out of Memory Error: How to Fix It

Sending the invoices, forms, or other documents through QuickBooks can become frustrating when the QuickBooks QBmapi64 Out of Memory Error suddenly appears. The error may prevent QuickBooks from sending emails, and in some cases, the program may freeze or stop responding.

The error doesn’t always mean that your computer is low on memory. It can also be caused by issues with Microsoft Outlook, QuickBooks settings, Windows components, damaged program files, or the MAPI email service.

In this guide, we’ll look at the common reasons behind this error and walk you through simple solutions to get QuickBooks working normally again.

What Causes the QuickBooks QBmapi64 Out of Memory Error?

The QuickBooks QBmapi64 Out of Memory Error can happen for different reasons, especially when QuickBooks is trying to send an invoice, form, or other document by email. The problem may be related to QuickBooks itself or another program that QuickBooks uses to send emails. Look at the common causes of this error below:

• Using Outdated QuickBooks Program: An older QuickBooks version may have compatibility issues that affect email features.
• Problems with Microsoft Outlook: If Outlook is outdated, incorrectly configured, or not set as the default email app, QuickBooks may have trouble sending emails.
• Damaged QuickBooks files: Corrupted program or user preference files can sometimes cause the error.
• Issues with the MAPI service: QuickBooks uses Windows MAPI components to work with email applications, and problems with these components can interfere with sending emails.
• Windows-related issues: Outdated Windows components or system settings may prevent QuickBooks from working properly with other applications.
• Limited system resources: Having many programs running at the same time can leave less memory available for QuickBooks.
• Incorrect QuickBooks email settings: Incorrect or outdated email preferences can also cause problems when sending forms or invoices.

How to Fix QuickBooks QBmapi64 Out of Memory Error?

Now that you know what can cause the error, it’s time to work on fixing it. Start with the simpler solutions first, as they can often resolve the problem without changing any advanced Windows settings.

Solution 1: Update QuickBooks Desktop

Before trying anything complicated, check whether QuickBooks is up to date. An older version may not work properly with Windows or Outlook, which can lead to problems when you try to send an invoice or other form by email.

To update QuickBooks:

• Open QuickBooks Desktop.
• Go to Help and select Update QuickBooks Desktop.
• Open the Update Now tab.
• Click Get Updates.

• Once the Update is finished, close and reopen QuickBooks.
• Try sending the email again.

If you still get the QBmapi64 Out of Memory Error, continue with the next solution.

Solution 2: Update Microsoft Outlook

If you use Outlook to send invoices or other forms from QuickBooks, an outdated Outlook version can sometimes cause problems. Updating Office is a simple step and may fix the issue without changing your QuickBooks settings.

To update Outlook:

• Open Microsoft Outlook.
• Click File and select Office Account.
• Look for Update Options.
• Click Update Now.
• Let Outlook finish installing any available updates.
• Restart your computer and open QuickBooks again.
• Try sending an invoice or form by email.

If the error still appears, move on to the next solution.

Solution 3: Run QuickBooks as an Administrator

If your QuickBooks program does not have enough permission to work properly with Outlook or other Windows services, you may face the QBmapi64 Out of Memory Error. Running it as an administrator gives QuickBooks the permissions it needs. Here’s how:

• Close QuickBooks Desktop completely.
• Find the QuickBooks icon on your desktop.
• Right-click the icon.
• Select Run as administrator.

• If Windows asks for permission, select Yes.
• Open your company file and try sending an invoice or form by email.

If the QuickBooks QBmapi64 Out of Memory Error still shows up, try the next solution.

Solution 4: Set Outlook as the Default Email App

QuickBooks relies on the email application configured in Windows when you use Outlook to send forms. If another mail app is set as the default, QuickBooks may not communicate with Outlook as expected.

To make Outlook your default mail app, follow these steps:

• Close QuickBooks and Outlook.
• Open Windows Settings.
• Select Apps and then Default apps.
• Search for Outlook.
• Set Outlook as the default app for the relevant email/mail file and link types.
• Close Settings.
• Restart your computer.
• Open QuickBooks and try sending an invoice or form again.

If the QuickBooks QBmapi64 Out of Memory Error still appears, continue to the next troubleshooting step.

Solution 5: Check QuickBooks Email Preferences

Incorrect or outdated QuickBooks Email Setup can also interfere with sending forms from QuickBooks.

Here’s how to review the email preferences:

• Open QuickBooks Desktop and your company file.
• Go to Edit and select Preferences.

• Choose Send Forms.
• Select Outlook if you use Outlook for sending emails.
• Review the email account and security settings shown there.
• Save the changes and select OK.
• Send a test invoice or form.

If QuickBooks still displays the QBmapi64 Out of Memory Error, continue with the next solution.

Solution 6: Check Available Memory & Close Unnecessary Programs

The QuickBooks QBmapi64 Out of Memory Error does not always mean your computer needs more RAM. Other programs may be using too much memory, leaving less available for QuickBooks.

Before adding more RAM, check which programs are using the most memory.

• Press Ctrl + Shift + Esc to open Task Manager.
• If necessary, select More details.
• Open the Processes tab.
• Select the Memory column to sort applications by memory usage.
• Close programs you recognize but are not currently using.
• Leave QuickBooks and Outlook open.
• Try sending the document again.

Avoid ending Windows processes or unfamiliar system services unless you know what they do.

Solution 7: Repair QuickBooks Using QuickBooks Tool Hub

Sometimes, the problem is caused by a damaged QuickBooks program file. QuickBooks Tool Hub can help repair common program issues.

Here’s what to do:

• Close QuickBooks Desktop.
• Open QuickBooks Tool Hub.
• Select Program Problems.
• Click Quick Fix My Program.

• Let the tool complete the repair.
• Open QuickBooks again and try sending the invoice.

If the error is still there, try the next solution.

Solution 8: Check If Your Company File is Causing the Problem

Sometimes, the problem may be with a particular company file rather than QuickBooks itself. You can check this by opening a sample company file.

• Close your current company file.
• Open QuickBooks Desktop.
• Select Open a Sample File.
• Choose any sample company file.
• Try sending an invoice or form by email.

If the email works from the sample file but not from your company file, your company file may have an issue. In that case, you can use QuickBooks’ data verification and repair tools to check the File.

If the same error appears with the sample file, move to the next solution.

Solution 9: Check Outlook and MAPI

If QuickBooks is still unable to send emails, the problem may be related to Outlook not responding, Outlook configuration, or the Windows MAPI email service. A simple way to check is to try sending an email or document through Outlook from another Office application, such as Word.

• If other Office applications also have trouble sending emails, the issue may be with Outlook, Microsoft Office, or MAPI.
• If Outlook works normally but QuickBooks still shows the error, the problem is more likely related to QuickBooks or its email settings.

This check can help you understand where the problem is before trying more advanced fixes.

How to Identify the QuickBooks QBmapi64 Out of Memory Error?

The QuickBooks QBmapi64 out of memory error normally occurs when you try to email an invoice, form, or other document from QuickBooks Desktop. You may notice one or more of these signs:

• QuickBooks displays a “QBmapi64 – Out of Memory” error message.
• The error appears while sending an invoice, form, or PDF by email.
• QuickBooks becomes slow or stops responding.
• QuickBooks has trouble communicating with Microsoft Outlook.
• Emailing documents from QuickBooks fails even though other QuickBooks features work normally.
• The error may appear repeatedly when you try to send documents through Outlook.

If the problem occurs only when QuickBooks is using Outlook for email, checking Outlook, QuickBooks email preferences, and the MAPI connection can help you identify the source of the issue.

What to Do If the QBmapi64 Error Still Appears?

If the QuickBooks QBmapi64 out of memory error continues after trying the solutions above, the problem may be related to Microsoft Office, Outlook, MAPI, or the QuickBooks installation. In this situation, you can try the following:

• Repair Microsoft Office or Outlook if other Office applications are also having trouble sending emails.
• Run the QuickBooks Install Diagnostic Tool if you suspect damaged QuickBooks or Windows components.
• Check your QuickBooks and Outlook compatibility and make sure both are updated.
• Try Webmail temporarily if Outlook is the part causing the problem.
• If you’re not comfortable changing MAPI or Windows settings, contact a QuickBooks or IT professional rather than modifying system files yourself.

How to Prevent the QuickBooks QBmapi64 Out of Memory Error?

You can reduce the chances of seeing the QuickBooks QBmapi64 out of memory error by keeping QuickBooks and the programs it works with properly updated and configured. Follow these simple tips:

• Keep QuickBooks Program Updated: Install the latest available QuickBooks versions to improve compatibility and fix potential issues with the software.
• Update Microsoft Outlook Regularly: If you use Outlook to send invoices and forms, keep your Office updated with the latest release.
• Use Outlook as your Default Email App: Make sure Windows and QuickBooks are configured to use the correct email application.
• Avoid running too many programs at once: Close unnecessary applications when working with QuickBooks, especially if your computer has limited available memory.
• Check your QuickBooks email preferences: Make sure your email provider and account settings are correctly configured.
• Keep Windows updated: Regular Windows updates can help maintain compatibility between QuickBooks and Microsoft components.
• Repair QuickBooks when problems start: If QuickBooks begins crashing or showing repeated errors, you can use the appropriate QuickBooks repair tools instead of repeatedly restarting the program.

Conclusion

The QuickBooks QBmapi64 out of memory error can disrupt your workflow when you need to send invoices, forms, or other documents from QuickBooks. By following the above-mentioned solutions, you can easily fix this problem. Before making any advanced settings, you should first identify where the problem occurs.

To fix this error, check your QuickBooks and Outlook updates, email preferences, and available system memory. If those checks don’t help, use QuickBooks Tool Hub and Outlook/MAPI testing.

If the error continues after completing these steps, you can contact Data Service Team at +1(888)-718-7888 live specialists to resolve the problem.