Fix QuickBooks Error C 343
Business Software

What Are The Best Ways To Fix QuickBooks Error C 343? 

February 11, 2020

QuickBooks is an accounting software best for small and mid-sized businesses. Whether you are a distributor, temporary worker, retailer or an accountant, it is amazingly useful. Regardless of being an extraordinary tool, it also shows undesirable issues like QuickBooks Error C 343.

Below, we will talk about the best ways to resolve this issue. Also, we will explain the reason behind the error so that you can prevent it in the future. So, whenever you face any problem related to QuickBooks, then contact our QuickBooks Support experts on our toll free helpline number.

QuickBooks Error C 343

You may come across this issue while attempting to open your QuickBooks Desktop. Once QuickBooks error code 343 happens, users think that it’s hard to get to their company file. Therefore, it is necessary for users to update their QuickBooks software to the latest version.

Here are some reasons for this error:

  • When a file is missing, corrupt or unregistered.
  • The MicrosoftCore XML Services .dll files are corrupt, unregistered or missing.
  • When your QuickBooks accounting software isn’t updated to the new version.

Valuable Methods To Resolve QuickBooks Error C 343

The best ways to get rid of this issue are as follows:

Solution 1: Registering all the MSXML.dll files in your PC 

  • Open Run command (Win+R)
  • Write Regsvr32MSXML3.dll and press Enter button
  • When all the files are enlisted in the correct way, a message saying: SUCCEEDED will show.
  • After that, Restart your PC. In case the issue still appears, follow the steps mentioned in Solution: 2.

Solution 2: First Uninstall & then reinstall MSCML.dll files Again 

  • Open QuickBooks software
  • Search for MSXML files on the download page.
  • Download all the files on your PC and once they are installed, double click on one of them and follow the definite guidelines.
  • Restart the QuickBooks software to check if the error still displays.

Solution 3: Download & Execute the QuickBooks Install Diagnostic Tool 

  • Search QuickBooks Install Diagnostic Tool and download it on your PC.
  • Once installed, you have to run the tool. But before that, ensure that you close all the programs that are already open.
  • The tool will take around 15-20 minutes to finish the process. Basically, it depends on how fast your internet connection is.
  • After that, Restart the PC and ensure that all the drivers are updated properly.

 Solution 4: Use QuickBooks Clean Install for Better Results 

  • Perform a full clean-up of all the QuickBooks files and don’t forget to keep a backup of them.
  • You have to store a copy of the Downloaded file or CD at a safe place.
  • Users may also accomplish a free copy from Intuit by giving the correct credentials and billing details..
  • The Clean Install solution works for a wide range of issues. Whether you face QuickBooks error C 343 or QuickBooks error C 47, you will have the option to remove the issue easily.

Solution 5: Access your QuickBooks Accounting Software in Safe Mode 

  • From the Desktop, double click on the QuickBooks icon while simultaneously holding or pressing the Ctrl button.
  • Doing so will open the QuickBooks accounting software in the safe mode and without the company file.
  • After that, click on the File option, and select the Open Company option.
  • Click on the Browse option to choose the file that you want to open.
  • Quite possibly the new company file won’t open for you. Right now, will have rebuild and verify it by the following steps:
    • In the File Menu, click on the File Operations.
    • Select the Verify Rebuild option and the issue won’t trouble you again.


Sometimes, all the above mentioned solutions will fail. If you are one of those users, then don’t waste any more time and contact our experts. When you contact us, we will ensure that the QuickBooks error C 343 is resolved. Additionally, we will provide you with a total guide that will help you fix the issue on your own if it comes up again.

If you face any problem related to QuickBooks or its products such as- QuickBooks Hosting, Payroll, POS, Enterprise, etc then contact us on our support helpline number. Our experts are always available to provide the best solution to resolve your issues.

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