When I try to file a return, I get the following message: – “Local Error: 1046 Authentication Failure. The supplied user credentials failed validation for the requested service”

Posted May 30, 2017

The 1046 error can be caused by the following:-

Wrong version of the software
- Please ensure you have the latest version of our software by viewing the BTCSoftware About box. It should match the version available on our website.
Bad Gateway id and/or password
- You can check these via the options button from the submission dialog. However, if you have already filed a return on the SAME COMPUTER as you are using then these should be fine.
Invalid UTR
- The UTR entered should be in the correct format. For CT Returns it needs to be 13 digits long representing the client’s 3 digit tax office followed by their 10 digit UTR and for SA Returns it should be 10 digits
A problem with the HMRC Gateway
- If the status pageisn’t reporting any issues then the only way to check this is for you to call the HMRC online helpdesk quoting your references. Their number is 0845 60 55 999.