QuickBooks Online Sync Error : QBO - ERROR CODE:3200, ERROR MESSAGE:message=ApplicationAuthenticationFailed; errorCode=003200; statusCode=401, ERROR DETAIL:null

Why the Sync Error occurs

This error occurs when:

  • QuickBooks Online is experiencing intermittent issues which is affecting a stable sync connection
  • QBO login credentials used to connect the sync are invalid
  • QBO login credentials used to connect the sync are no longer valid

How to Fix the Sync Error

Disconnect and reconnect the sync.

  1. Click the gear icon
  2. Click Setup under Sync
  3. Click Disconnect
  4. Click Yes to confirm
  5. Click QuickBooks Online
  6. Click Connect to QuickBooks
  7. Enter Admin login credentials for QuickBooks Online
  8. Click Sign In
  9. Select the company in QuickBooks Online, if more than one, to sync
  10. Click Confirm
  11. Review that the company selected is correct, then click Authorize