I am seeing this error also. The same error occurs when I disable online banking for American Express and then try to "set up online banking". After selecting Financial Institution, American Express:
Error Description: java.io.IOException: HTTP Error:403 Forbidden
I've tried disabling AMEX and re-creating the online account. It always comes up with an account number consisting of letters and numbers. When I just tried to download transactions- it launched a web browser within moneydance - pointing to amex- that I can't login from. Going to AMEX website and downloading a quicken file imports fine.
Instructions for Intuit Customers
We recently made system updates to our connection to Intuit's Quickbooks and Quicken software. To resume .QFX and .QBO downloads, please complete a Quickbooks and/or Quicken account deactivation and reactivation process.
Please review the following instructions to complete the process, or contact Intuit Customer Support at Quicken.com/support or Quickbooks.com/support for help.
You can also use Quicken Direct Connect.
If you're a Small Business Card Member and have Quickbooks Online, you can enroll in Connect to Quickbooks. Your Business Card transactions will then be automatically synced with Quickbooks daily.
The following instructions also contain information about how to correct any duplicate transactional data when you set up a new account.
Amex appears to be working again for me. I was able to re-enter my logon information and have it succeed to the download step. I repeated the download several times and got an error once, but it was not the previous HTTP 403 error, it was something about SSL. I did not get the error again on subsequent download attempts.
I hope that your problem is permanently fixed. I came here to post a potential TD Bank problem that I see coming, but I am seeing signs here that I may already be too late. I was going to call it the TD Corona Syndrome.
The last time I had TD Bank Online Bank problems with Moneydance, the problem was fixed temporarily several times, and became permanent for about 1-1/2 years.
In my effort to help, I posted a message here about my problem logging into TD's website which occurred before Moneydance had a problem. I was blocking ThreatMetrix, cleverly disguised as tmx.tdbank.com. Isn't this called dns poisoning? TD tries to trick you into thinking that you are connecting to TD server, when you are actually connecting to a ThreatMetrix server.
I don't know if I was of any help, but if I was, then I want to post that I have again experienced TD online problems because I was blocking nexus.ensighten.com. After typing my username and password, I had to wait for a phone call to obtain and enter a security code. This happens every time I try to login, and TD does not remember me. This is exactly the same problem I had when blocking ThreatMetrix.
P.S. To be clear, I am not having any problem with Moneydance & TD Bank at the present time.