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AutoModSync

Automatically keeps a Valheim server's synchronized BepInEx plugin set matched on trusted clients, including verification, restart, and reconnect.
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ValheimAutoModSync-2.5.0-CurseForge.zip

File nameValheimAutoModSync-2.5.0-CurseForge.zip
Uploader
gordonfreesaygordonfreesay
Uploaded
Sep 21, 2026
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0
Size
46.6 KB
File ID
8941755
Type
R
Release
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What's new

2.5.0

  • Moves AutoModSync preflight ahead of the normal Valheim ServerHandshake so Jotunn/Epic Loot and similar mod-compatibility checks run only after synchronization has had a chance to complete.
  • Holds/replays only Valheim's own ServerHandshake; third-party compatibility results are not bypassed or rewritten.
  • Preserves and replays the exact original ServerHandshake argument list instead of synthesizing an empty call, preventing malformed-handshake EndOfStreamException failures on current Valheim builds.
  • Adds an optional AMS4 preflight acknowledgement before potentially expensive manifest generation.
  • Speeds up first-time/bare-client synchronization with backward-compatible windowed, binary-batch, and pipelined bundle transfer modes while retaining AMS4 fallbacks for older peers.
  • Tunes the live SteamNetworkingSockets connection only during AutoModSync bundle delivery, using an 8 MiB/s temporary minimum, 32 MiB/s maximum, and 16 MiB reliable buffer by default, then restores the exact previous values.
  • Retries the early AMS4_Hello inside the fail-open preflight window to cover startup races before the server has finished registering handlers.
  • Extends synchronization beyond BepInEx/plugins: required BepInEx/patchers files can now be synchronized to the patcher root, and selected BepInEx/config files can be synchronized through an explicit server allowlist.
  • Adds ServerOnlyPatterns and optional ClientRequiredPatterns compatibility classification so dedicated-server-only files do not have to be advertised to clients.
  • Keeps config synchronization opt-in and hard-blocks the AutoModSync signing identity files and loader-wide BepInEx.cfg from synchronized config manifests.
  • Keeps protocol version 4 / AMS4 for backward compatibility with 2.4.x peers.
  • Adds the Windows GUI standalone installer, Authenticode signing/verification tooling for AutoModSync-authored binaries, and source-level intent/workflow documentation.

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