Fixing methods for QuickBooks unable to send emails due to network connection failure

by John Kartan Accounting And Bookkeeping
QuickBooks unable to send emails due to network connection failure

QuickBooks allows user to share their account reports or convey messages by sending emails directly from the software. But, users around the world have reported their QuickBooks unable to send emails due to network connection failure. If you also face problems sending emails from the software, this blog will help you figure out why it happens and the actions you can take to remove the issue.

Get in touch with a QB support team at 1.855.738.2784 to rectify the error quickly.


You can face trouble performing online QBDT tasks, especially sending emails, if network connectivity issues arise in the software. The conditions that cause QBDT’s connection to the internet to lapse are mentioned below-
  • Windows Firewall or security programs can completely restrict internet access of QuickBooks and other applications on your PC.
  • The MAPI32.dll file stored on your system is damaged and fails to run while sending the emails.
  • QuickBooks can face trouble connecting to Intuit servers due to a poor internet speed delivered by your network connection.


You need to deal with the connectivity issues on your PC that might cause problems when QBDT tries to send emails or execute any other task. Use the steps mentioned below to tackle the issues affecting the network connection-

Solution 1- Prevent QBDT from losing internet access by fixing the Windows Firewall settings

Windows Firewall or any other security program installed on your PC can completely restrict applications from accessing the internet or connecting to other systems. QuickBooks faces problems sending emails if it can’t connect to the Intuit servers due to Windows Firewall limitations. You can resolve the issue by allowing QBDT to bypass the restrictions so that it can establish a stable connection with the internet. You won’t be able to send emails or perform any other online task until you fix the Windows Firewall settings as shown in the following steps-
  1. Go to the control panel to open the Windows Defender Firewall menu or type ‘Windows Firewall’ in the search panel and open it from the results.
  2. Tap Allow an app or feature through the Windows Firewall option and scroll down the application list to find QuickBooks.
  3. Single-click QuickBooksXX in the list and ensure the Private & Public checkboxes beside it are marked.
  4. Save the settings and rerun QuickBooks on your PC.
If the software isn’t able to send the emails, check out the next solution.

Solution 2- Repair the MAPI32.dll file to prevent the QBDT issues

MAPI32.dll is a critical file for the Windows Messaging Application interface, which allows sharing messages and emails from all the Windows applications. QuickBooks can face trouble delivering the emails if this file gets damaged. Apply the following steps to repair the damaged MAPI32.dll file-
  1. Go to the search panel on your file explorer and type ‘mapi32.dll.’
  2. Open the file folder and search the list for Fixmapi.exe.
  3. Run the application and follow the directions to repair the MAPI32.dll file.
  4. Launch QuickBooks after the file is repaired.


This brings us to the end of this blog describing the reasons for your QuickBooks unable to send emails due to network connection failure. The methods to remove the issue are also mentioned in the blog, and we hope you’ll use them to resume emailing from QBDT without problems.
Contact a QB support team at 1.855.738.2784 if you encounter problems while applying the solutions.

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About John Kartan Advanced   Accounting And Bookkeeping

84 connections, 3 recommendations, 292 honor points.
Joined APSense since, January 28th, 2021, From Terrell, United States.

Created on Sep 8th 2023 10:05. Viewed 102 times.


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