Confirm that there aren't one or more Rules causing the problem.See Prepare the Network in How to Install and Configure Presto. Confirm that the ordering of the DNS servers handed out by DHCP orders internal DNS servers before 8.8.8.8.Check that printer is set to 'Active'.Advanced Troubleshooting - DNS Testing Configuration.For more comprehensive information, see our Advanced Troubleshooting guides: The following steps should resolve most printing related problems. If it returns 192.168.1.1 and the Admin UI still fails to load, contact Presto Support. After making necessary corrections, re-enter the above command.If it does not, it's likely that you have DNS rebinding and that must be whitelisted Please see Network Requirements in this article for more details. On the Presto Primary Server, go to a command prompt and enter the following command in the format indicated: nslookup.Note: this example uses 192.168.1.1 as the IP address of the Presto Primary Server. If the UI is a black screen: Please "Allow Outbound Internet Access". If the Admin UI fails to load, follow these steps to diagnose the problem: prestod -start Troubleshooting the Admin UI Navigate to /Applications/Presto.app/Contents/usr/bin and type the appropriate command: Navigate to C:\Program Files\Collobos\Presto\Service and type the appropriate command: The Presto service can be started and stopped from a command prompt. TCP 443 Outbound (used for license activation).The following are required for various aspects of Presto to properly function: Whitelist URLs Your purchase of the Presto 2 license entitles you to free upgrades to all Presto 3.0 versions. If you are running an earlier version of Presto 2, we encourage you to upgrade as soon as possible. Note: The contents of this article are specific to Presto Server version 3.0 and later. Troubleshooting Firewall/Antivirus Software Includes links to more detailed solutions. Comprehensive information to resolve most problems with Presto.
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