Resolving the "QuickBooks Unable to Connect to Remote Server" issue involves several steps. First, ensure your internet connection is stable. Check your firewall and antivirus settings to make sure they aren't blocking QuickBooks. Update QuickBooks to the latest version, as updates often include fixes for connectivity issues. If the problem persists, configure your system's internet settings to allow QuickBooks access. Ensure that the server hosting the company file is running and accessible. Restarting both the server and your computer can sometimes resolve connectivity problems. If these steps don't work, consider reaching out to QuickBooks support for more advanced troubleshooting and assistance. Regular maintenance and updates can prevent such issues from recurring.