When attempting to sync to Quickbooks, you will receive error #80040438 if you have multiple instances of Quickbooks open at the same time.
- Completely close Quickbooks down (easiest way is to restart your computer).
- Attempt to run LMN Sync again.
If you still receive the error:
- Use Control + Alt + Delete and see if your task manager shows more than one Quickbooks open.
- If you see more than one Quickbooks running in the task manager, end the tasks from here.
- If you cannot see more that one Quickbooks running in the task manager, please reboot your computer.
2. Attempt to run LMN Sync again.
Should you require assistance, please contact email@example.com