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AR Fast SNTP v0.10.2 — Windows x64

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AR Fast SNTP v0.10.2 — Windows x64

Official public Windows installer, built from the merged multi-source SNTP Windows Studio and network-recovery baseline. One installer executable: ARFastSNTP-Setup-Windows-x64.exe, plus a small .sha256 text checksum file.

Highlights

  • Canonical Avalonia Studio with compact NTP Server Explorer, live status, stratum, time offset, server time, RTT with tooltip, subtle zebra rows, and bounded Status History/diagnostics.
  • Up to 16 IPv4 unicast NTP sources with live Add/Delete/Enable/Disable without reinstalling or relaunching the Windows Service.
  • Single background service with bounded polling and one clock-correction authority.
  • All sources OFF: service remains responsive, but no UDP NTP queries or system clock correction; status heartbeat stays alive.
  • ON/reconnected network: coalesced NIC events, adapter fingerprint fallback, bounded retry/recovery. Stale samples are discarded before clock selection.
  • Clock-epoch and NTP KoD safeguards; post-step verification requires a fresh NTP response.
  • Consolidated canonical icon resources for Windows EXEs, Studio, installer, README, and website.

Install or upgrade

Download the installer and checksum under Assets. Compare the checksum in Windows PowerShell:

Get-FileHash .\ARFastSNTP-Setup-Windows-x64.exe -Algorithm SHA256

Run installer as administrator on an authorized test/engineering PC. It detects the app's existing service, preserves the saved peer catalog during upgrade, and configures one permanent Windows Service. A new installation asks for a unicast IPv4 NTP server.

The default installer permits Windows clock correction when the source is verified. To run monitor-only on a lab PC, start the installer with /LABSYNC=0. Manage peers afterward from Studio without repeated elevation. Uninstall through Windows Settings → Apps → Installed apps → AR Fast SNTP.

Known limits and release safety

This build is not Authenticode-signed; SmartScreen reputation may be limited. Verify the GitHub release source and checksum. Do not disable antivirus or Group Policy protections merely to install it.

Not certified for operational SCADA, SOE, historian, or GPS-grade reference timing. This release is not evidence of 24-hour soak, installer rollback on every older version, deterministic response SLA across every NIC/topology, or full RFC 5905 clock discipline. The ARSAS same-host Npcap RAW→Windows UDP delivery issue is not claimed resolved.

Source: repository · Release acceptance / future industrial certification · Multi-source architecture.

License: GPL-2.0-or-later; LICENSE and NOTICE are included within the installer.

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