| Error Code / Message | Solution | | :--- | :--- | | | Re-register DLL files. Run regsvr32 mscomctl.ocx and regsvr32 richtx32.ocx as admin. | | "Database is corrupted" | Use the built-in "Repair Database" tool in File menu. For Access DB, open Attend.mdb with MS Access and run "Compact and Repair." | | "Failed to sync time" | Device time difference > 30 minutes. Manually set PC time and use "Sync Device Time" in software. | | "Fingerprint template mismatch" | You changed the algorithm version (e.g., from 9.0 to 10.0). Re-enroll users. | | "Report shows no data" | Go to Processing > Process Attendance Data. You must process logs before generating reports. |