ERROR CODE

We appreciate your time in reaching out to us. Allow me to help you resolve the error so you can proceed in moving to QBO, eloizemellet.

Error C=343 in QuickBooks Desktop is often caused by a missing or corrupted MSXML.dll file or compatibility issues between your Windows and QuickBooks versions. Here are some troubleshooting steps to fix this error:

• Reinstall or update the MSXML DLL files on your system. QuickBooks requires specific versions to run properly. Here's an article as a guide: Repair Microsoft MSXML.
• Make sure you have installed all the latest Windows updates, especially any .NET Framework updates. This helps with QuickBooks compatibility.
• Try running QuickBooks in Selective Startup mode to disable other startup programs that may be interfering.
• Reinstall QuickBooks Desktop on the computer and update to the latest release and patches.
• Try creating a new Windows user profile and open QuickBooks with that to rule out corrupted user files.

I would also recommend seeking assistance from your IT person as the majority of the troubleshooting steps involved working with your computer OS components and settings.

 Feel free to check out these articles for additional guidance and resources when migrating data to QBO:

• Move Your QuickBooks Desktop File To QuickBooks Online
• Learn How Features And Data Move From QuickBooks Desktop To QuickBooks Online

You may have noticed that these articles fall under the USA Community banner. However, please rest assured that the steps outlined apply to all Desktop versions in all regions.

Don't hesitate to reach out to us again if you require further assistance during your transition to QuickBooks Online, eloizemellet. We are always here to offer our support whenever you need it.