Hello
I’m still struggling with this problem.
Please note that I am using QUICKBOOKS DESKTOP PRO 2019 (I upgraded yesterday) so I do NOT have the Taxes menu!
I have just checked with HMRC online and have definitely signed up for MTD.
When I try and File Return, I am prompted for a)USERNAME b)PASSWORD c)AGENT TYPE. I don’t know which agent type to select (I am not an agent) but I’ve tried several times and get the ‘authentication error’.
