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Resetting Xero Integration - Xero 404 Troubleshooting Fix

Follow these steps to reset your Xero integration.  Resetting your Xero integration will also reset the Xero invoice template to the default setting.

Updated: July 2026

The Xero 404 error can occur if:

1/  The initial Xero Integration with Thankyou Payroll was interrupted or not fully completed.

2/ There is a change at Xero impacting the integration, or

3/ A slow internet connection speed.

Info - Blue Block (1)Reach out to our Customer Success Team if you are unsure about correcting this error. We are here to help and will walk you through the steps in this document.

 

Disconnect Xero integration from within Thankyou Payroll

XeroIntegration_Disconnect
  1. Click the 'Disconnect' button at the bottom of the 'Xero Integration' Tab.
To get here, go to 'Settings' and select 'Xero Integration' from the dropdown menu.

Disconnect Thankyou Payroll from within Xero

The 404 error can occur if Thankyou Payroll was only partly linked.  To check this, you will need to look under 'Connected Apps' and disconnect Thankyou Payroll. 

Log in to your Xero account. Please note that this is an indication of where the settings are at the time of creating this article. As this is an external system, the layout and look of what you see might be different.

Xero404_Disconnect

  1. Left-click on the arrow next to your account name to access the Account Settings dropdown menu in Xero.
  2. Select 'Settings' from the dropdown menu.
  3. In the Organisation Settings screen that opens up, find the 'Connected Apps' menu and select this.
  4. Look for Thankyou Payroll in the Connected Apps list:
    1. If you find Thankyou Payroll, press the 'Disconnect' button.
      Xero404_ConnectedApps
    2. If you do not find Thankyou Payroll listed, the original integration was not completed. Move on to set up your Xero Integration  again.

Setting up Xero Integration again

You have to reset the integration with Xero. Follow this Help Guide to re-establish to do this from start to finish. Note that during this process, you could be asked to log in to your Xero account.