The problems within the network, servers or software conflicts can cause download error in Quicken. To fix the Quicken download error here’s a guidance to troubleshoot and resolve Quicken download errors:

• If there is a problem within the internet connectivity, download error in Quicken may occur. To check the internet connection, you have to access to the other website or online services.  If you found network issues, troubleshoot it or switch to different network.
• You have to check for the updates by going to the “Help” menu and selecting “Check for updates”.  Make sure to use the latest versions of Quicken to avoid download error.
• If the account setting is not correctly configured then it could trigger Quicken download error. Always double check the settings and configure correctly.
• If the login credentials have been recently changed for the financial institution with the account, you have to update in Quicken also. Incorrect login details can cause download errors.
• The aggressive security software or firewall can block quicken from accessing the internet, resulting errors while downloading. You can disable the Security software temporarily and try downloading again.
• When using Quicken cloud to sync the data across devices, you have to reset Quicken cloud data to resolve download errors. You have to go to the “Edit” menu, select “Preferences”, select “Quicken ID, Sync & Alerts”, and then tap on “Reset your cloud data”.

If the steps above wont help to resolve Quicken download errors, connect Quicken customer support for more information and guidance. 

More Info- https://resetquickenpassword.com/recover-quicken-file-password/