Vanguard Direct Connect stopped working

qubiti
qubiti Quicken Mac Subscription Member

Direct Connect for Vanguard stopped working for me at the start of October. I keep getting an OFX Error 16503 and the underlying error shows as "HTTP 400" with no other information.

Direct connect has stopped working before for a few days at a time but not for an entire month. I tried disconnecting the account as per another post, but I haven't been able to connect the account again since it fails every time.

Looking at the OFX logs, I noticed this error. Anyone know how to fix? It seems like an issue in Quicken to me.

2024-10-28 20:41:01 +0000: HTTP-400 error from server:
{"errors":[{"title":"Internal Error. Unexpected Client Exception.","httpStatus":500,"detail":"Received error calling service, error=<!doctype html><html lang="en"><head><title>HTTP Status 400 ? Bad Request</title><style type="text/css">body {font-family:Tahoma,Arial,sans-serif;} h1, h2, h3, b {color:white;background-color:#525D76;} h1 {font-size:22px;} h2 {font-size:16px;} h3 {font-size:14px;} p {font-size:12px;} a {color:black;} .line {height:1px;background-color:#525D76;border:none;}</style></head><body><h1>HTTP Status 400 ? Bad Request</h1></body></html>","code":"QCS-0500-3"}]}