QuickBooks Delivery Server Down After Update Sometimes, after updating QuickBooks, users encounter delivery server down errors due to corrupted files or incomplete installation. Repairing the installation, ensuring the latest updates, and checking firewall permissions restores server access, enabling smooth download of updates, tax tables, and other essential QuickBooks services. ------ https://www.uzahighstreet.com/articles/quickbooks-delivery-server-down-error-how-to-fix-it-fast