What Is QuickBooks Error Code C=343?

QuickBooks Error C=343 generally occurs when the MSXML.DLL files gets corrupted or damaged. When the error occurs in your QuickBooks software, it can restrict you from accessing your company file and the QuickBooks may not respond. The best remedy to stay away from this issue is updating your QuickBooks at regular intervals. If you want instant support for your QuickBooks issues then you need to dial the QuickBooks Payroll Support Number team.

QuickBooks Error C=343: Causes

Main causes for the error code C=343 in QuickBooks are as given below:

  • Damaged, missing or unregistered MsXML services .dll file: DLL is a Windows Dynamic Link Library component. This file is required for programs and web browser extensions because these files contain program code, data and resources.
  • Using older version of QuickBooks: The issue might be occurring because you are using an older version of QuickBooks. The issue can be fixed by updating your QuickBooks software to the latest version i.e. QuickBooks version 2019. To see if there is any update available or not then you can press F2 button and you will be displayed the Product Information Window.

How To Resolve QuickBooks Error C=343

Before going on to the solutions, you can try to re-register these files while the QuickBooks is not open and then open QuickBooks again in order to check if the error is resolved or not. If the error still persists then you need go on the following steps in order to fix the QuickBooks Error C=343:

Solution 1: Update QuickBooks To The Latest Version

  • Open the QuickBooks software
  • Press the F2 key to see the latest update
  • Download and install updates
  • Once the update process is finished, close QuickBooks and restart your computer.
  • Open QuickBooks again to see if the error is resolved or not.

Solution 2: Records The MSXML.DLL Files

For 32 bit Windows operating system:

  • Press Windows + R to open the Run window
  • Type dll and press the Enter key
  • You will receive the DllRegisterServer in C:\[Windows Folder]\system32\MSXML[Number].dll succeeded message when it is properly registered.
  • Restart QuickBooks to see if the error is fixed or not

For 64 bit Windows operating system:

  • Press Windows + R to open the Run window
  • Type cmd and press Enter key to open the command prompt
  • Tyoe CD\ and you will be taken to the C drive
  • Now type Regsvr32 MSXML3.dll and press the Enter key
  • Again type Regsvr32 MSXML4.dll and press the Enter key
  • Once both the files gets registered successfully, restart your QuickBooks software.

Solution 3: Uninstall and reinstall the MSCML.dll Files

  • Go to the official website of Microsoft and from there go to the download page of Microsoft Core XML
  • Install the files in your system
  • Open the file and follow the provided instructions
  • Restart the QuickBooks software and ensure that the error is resolved

Customer Support For QuickBooks Error C=343

Above mentioned steps will help you in resolving the error code c=343 in QuickBooks easily but we strongly recommend you to go for the manual solution only if you have decent technical knowledge of Computer and QuickBooks otherwise you might fall into some other issues. If you don’t have technical knowledge then you don’t need to worry because the highly experienced QuickBooks ProAdvisors of getsupportnumber.com can now be easily contacted by dialing the toll-free support number +1-866-701-7446.


QuickBooks Error Code C=343

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