How to Fix QuickBooks Error 80029c4a (Error Loading Type Library/DLL)

QuickBooks Error 80029c4a

Numerous QuickBooks (QB) users have encountered an error message lately when attempting to open their software: “QuickBooks Error 80029c4a Error loading type library/DLL can’t load a dynamic link library DLL.” This article delves into the causes of this error and provides effective troubleshooting solutions to resolve it.

Problem: there was an unexpected error reported while trying to run QuickBooks with company file “name of your company file:
Error Code 80029c4a
Description: Error loading type library/DLL

If you face a similar problem, read the article completely for a potential solution. Additionally, our QuickBooks error help desk team is available to assist you professionally. Our experts and certified accounting professionals are dedicated to providing the necessary guidance and assistance.

What is QuickBooks Error 80029c4a?

  1. QuickBooks Error Code 80029c4a:
    • Overview: QuickBooks Error 80029c4a is an unforeseen error primarily encountered when attempting to launch QuickBooks or access a company file.
    • Potential Causes:
      • Damaged or corrupted company file.
      • Other contributing factors can also lead to this error.
  2. Troubleshooting Steps:
    • Verify the integrity of the company file by creating a backup and restoring it.
    • Ensure that QuickBooks is updated to the latest version.
    • Run the QuickBooks File Doctor tool to detect and resolve any file-related issues.
    • Uninstall and reinstall QuickBooks while preserving company data.
    • Contact QuickBooks support if the issue persists.

What are the Causes of QuickBooks Error 80029c4a?

  • A company file has been corrupted or is unable to be located when users try to open QuickBooks, resulting in this error code.
  • The QuickBooks desktop file/files are corrupted, missing, or damaged.
  • The Windows registry is corrupted.
  • An incomplete installation of QuickBooks Pro software.
  • Error Code 80029c4a occurs during Windows startup, shutdown, or installation of the Windows operating system.
  • QuickBooks components may not start properly or the DLL files are missing or corrupted.
  • Your antivirus defender may have incorrectly marked a QB Desktop file as being infected with Trojans or malware.

What are the Signs and Symptoms of QuickBooks Error Code 80029c4a?

Here are some potential reasons behind Error 80029C4A:

  • Windows runs slowly or sluggishly.
  • The system “freezes” for a few seconds at a time.
  • Your computer system regularly crashes with Error 80029C4A.
  • Windows responds slowly to computer mouse or keyboard input.
  • Error Code 80029c4a appears during program installation.

Also Read: How to Create Work Order in QuickBooks

How to Fix QuickBooks Error 80029c4a?

Here are a few easy ways that you can use to resolve QuickBooks Error Code 80029c4a:

Method 1: Update Avast Program and Virus Definition

Update Avast Antivirus

As a first step, update all your programs and carry out an Avast virus definition check.

Avast virus definition

Note: If you are using a different antivirus program, you need to update it first.

  • Right-click on the Avast icon.
  • Select the Update option.
  • Click on the Program tab and follow the prompts to upgrade your Avast program.
  • Repeat steps 1-3 twice more.
  • Select the Engine and Virus option.

Method 2: Run the Reboot.bat file

Run the Reboot.bat file
  • Close QuickBooks Desktop.
  • Open the folder where the reboot.bat file is located.
  • Right-click on the QuickBooks Desktop icon and select Properties.
  • Click on Open File Location.
  • Right-click the reboot.bat file and select Run as System Administrator.
  • Ensure you run reboot.bat as the Windows Administrator.
  • The file may show as bat, reboot, or reboot.bat depending on your Windows folder options settings.
  • Do not manually close the window that appears. (This window will open blank and scroll through features.) It will close when the reboot.bat utility is complete.
  • Finally, restart your computer.

Method 3: Ensure the Antivirus Program Has Been Quarantined

Unintentionally, some antivirus systems prevent QuickBooks from loading the necessary files.
Check your antivirus software for files that have been placed in quarantine.
Just remove and reinstall the QuickBooks program on your computer. This enables the user to successfully launch your QB software.

If you see one of the programs listed here in your quarantine, allow permission to go through your firewall.



  • You can find the majority of these files under C:\Program Files\Intuit\QuickBooks (year).
  • 64-bit versions of the files are those that have (x86) in the path, such as C:\Program Files (x86)\Intuit\QuickBooks 20XX.

Note: Before making any changes to your anti-virus applications, we strongly advise you to speak with your IT representative.

Method 4: Update your QuickBooks Desktop

First and foremost, the user is advised to Re-install QuickBooks using Clean Install.

QuickBooks Clean Install Utility

Once that is done, then update the latest version of QuickBooks Desktop.

  • Navigate to the File menu and select Logoff or Close Company.
  • (Note: You must complete this step for each open company in QuickBooks if you open multiple business files at once.)
  • Next, select File and then click Exit.
  • Make sure you have the System Administrator account on your PC.
  • Remember that there isn’t a single company open on your desktop.
No Company Open

Now, go to the Help menu option, and then choose to update QuickBooks.

Update QuickBooks
  • Click on the Options button.
  • Select the Mark All button, then click on the Save button.
  • Next, click on the Update Now button.
  • Finally, click on the Reset Update button, then select the Get Updates option.
Success Update
  • Once the update process is complete, a pop-up will appear indicating a successful update.
  • Next, press the Alt + F4 keys or Esc to close QuickBooks Desktop.
  • When you open QuickBooks Desktop again, you may receive a pop-up prompting you to install an update.
  • Click the Yes option.
  • When the update is finished, restart your computer.

Method 5: Perform a Windows Repair on QuickBooks

  • Before beginning this process, the user must shut down the QuickBooks desktop.
  • Subsequently, press the Windows key on your keyboard.
  • then proceed to open your system’s Control Panel.
Uninstall QuickBooks
  • Then select Uninstall or Change Program with a click.
  • Select QuickBooks from the list of available programs.
  • Click on Uninstall/Change application as the next step.
QuickBooks Installation
  • Click Next in the QuickBooks installation box.
  • Next, the user must select the Repair Radio button before clicking Next.
  • Click the Repair button located at the bottom.
  • Click Finish after the repair process is finished.

We trust that after following the above instructions, your QuickBooks program is now fixed.

Next, if necessary, restart your computer.
Now to end, open QuickBooks software to ensure it opens normally.

Method 6: Running Windows System File Checker

  • Clicking the Start menu and then typing a command into the search box is the first step in this process.
  • The user then needs to hit the Enter key after pressing the Ctrl + Shift keys.
  • After completing that, the user will get a permission dialog box and need to select Yes
Running Windows System file checker
  • Entering SFC/Scannow and pressing Enter is the next stage in the procedure.
  • Utilizing the Windows file checker.
  • The system file checker will not stop searching for the error code until it has finished.
  • After the process is finished, the user must follow the on-screen instructions to resolve the problem.

Method 7: Perform a Clean Install QuickBooks Desktop

  • It is the user’s responsibility to compile all QuickBooks product information.
  • Download the installer for that specific QuickBooks version after that.
  • Now that the product has been purchased digitally, the user will have access to the license number, which is displayed on the original package or in the email confirming the transaction.
  • Note the product’s version and the year after that.
  • then remove the QuickBooks desktop application.
  • The next action is to launch the Windows start menu, search for the Control Panel, and click on it.
  • Select the Programs and Features or Uninstall a program option from now on.
  • Selecting the QuickBooks version from the list is the next step.
  • After completing that, select Uninstall/Change, followed by the alternatives to remove.
  • Select Next and complete the on-screen prompts.
  • Now reinstall your QuickBooks Desktop and you are good to go.

Method 8: Update Security Software

You should update the antivirus software or security software to the most recent version or release.
Next, add the Program/component exceptions, as explained in your user manual.
Lastly, re-open QuickBooks.

Also Read: Reclassify Transactions In QuickBooks


So, this is all for QuickBooks Error 80029c4a. In case your issue is still not resolved, you can book a session with us. Our expert team is here to assist you all the time.

Frequently Asked Questions (FAQs)

Q1: Does QuickBooks Error 80029c4a affect both QuickBooks Desktop and Online versions?

Q2: Can a conflicting third-party application cause Error 80029c4a?

Yes, a third-party application running in the background can potentially trigger Error 80029c4a in QuickBooks Desktop.


Leave a Reply

Your email address will not be published. Required fields are marked *