Tradebox Tradebox Helpdesk

Latest version of Tradebox is V2.0.260922.0 published on 22/09/2026

Helpdesk archive

Tag: Logon

Xero OAuth call back failure when connecting to Xero

When connecting Tradebox to Xero for the first time, you may experience the following error message: Xero OAuth call back failure An unhandled exception occurred while processing the request. Exception: invalid_grant Xero.NetStandard.OAuth2.Client.XeroClient.RequestAccessTokenAsync(string code) This can happen if the email you use to log into Tradebox is not identical to the email that you are logged […]

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