How to Set Windows File Associations to Open .JNLP Files Rumi, July 28, 2025 Document Details: To modify the file association to have JNLP files open with Java Web Start on a Windows XP, Windows 7/Windows Vista, Windows 8, or Windows 10 computer, follow the steps below: Windows 10: Go to the nhdeeds.com website, then click on Search County Records. Click to Accept Registry Disclaimer,… Continue Reading