# Typical syntax for CLI-based download vcp-cli> system software download zdc-package-<version>.tar.gz --url <repository_url>

: Avoid executing files without understanding their contents or purpose. If possible, review the code.

⚠️ : Never run or flash an unknown .zdc file—it could brick your device or inject malicious code.

Large enterprises with internal VMware academies distribute ZDC files via internal file shares to ensure every trainee starts with identical virtual hardware.

| Issue | Cause | Resolution | | :--- | :--- | :--- | | | Firewall blocking outbound port 443/22. | Update network ACLs to allow traffic to the repository IP. | | Disk Quota Exceeded | Insufficient space in /var or /tmp . | Purge old log files or previous ZDC backups using vcp-cli system cleanup . | | Checksum Mismatch | Corrupted download. | Re-initiate the download; check network stability. | | ZDC Sync Failure | Version mismatch between Active/Standby. | Ensure both nodes are compatible with the new ZDC version before deployment. |

: Launch the ACTIVATOR.exe application included with your VCP installation.