1046 Authentication error for VAT Filer

If you receive this error message it means that one of the following is incorrect:

Also, ensure that the 'enrolled for MTD' box is ticked in the Client's business section .

There are several ways you can fix this:

You can find out more about these errors in What is a '1046' Authentication Error?

PLEASE NOTE: The credentials you use for VAT Filing may be different to that for Self Assessment returns.

If this doesn't work and you're still having problems call HMRC on 0300 200 3700.

Article ID: 2334
Last updated: 17 Oct, 2019
Revision: 12
VAT Filer -> 1046 Authentication error for VAT Filer