School Management Software 3.1 Application Key And Unlock Key | HD |

| Error Message | Likely Cause | Quick Fix | | :--- | :--- | :--- | | “Invalid Application Key” | You changed server hardware (e.g., RAM or hard drive) after installation. | Re-generate the App Key and request a new Unlock Key from support. | | “Unlock Key already used” | You tried to use the same key on two different servers. | Most 3.1 licenses are single-install. You must deactivate the old install first. | | “Offline activation failed” | Your school server has no internet. | Use the offline manual method (usually a .req and .lic file exchange). |

What are your (e.g., fee management, automated timetables, report cards)? Do you have an existing database you need to migrate over? Offline school software download | SourceForge.net