| Issue | Probable Cause | Solution | | :--- | :--- | :--- | | Installer fails to start | Corrupted download | Re-download jcrepairsetupexe and verify checksum. | | Missing DLL errors | Missing VC++ runtimes | The installer should prompt to install them. If not, download from Microsoft manually. | | Database connection fails | Incorrect DB credentials or firewall | Use the configuration tool (re-run installer or access via Start Menu > JC Repair > DB Config). | | Antivirus quarantine | False positive on installer | Add jcrepairsetupexe and the installation folder to antivirus exclusions. |
: Visit the official JCID Download Center and select the "JCID Repair Operation Platform (installation package)". | Issue | Probable Cause | Solution |
: It is highly recommended to close any antivirus software before starting the installation, as some security programs may flag the setup file or its drivers. | | Database connection fails | Incorrect DB