navig-multiplicity-purge

navig-multiplicity-purge

Unofficial cleaner for Stardock / EdgeRunner Multiplicity 2, 3 and 4 leftovers.

Part of the NAVIG ecosystem. This repo ships a NAVIG skill, so the cleaner can be installed and run through the NAVIG registry — see navig-skill/. Naming follows the navig-* family (navig-menu, navig-vault, navig-dedupe, …) so it is discoverable alongside the other NAVIG tools.

Multiplicity's own uninstaller regularly leaves the machine in a half-uninstalled state: the service survives, HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Multiplicity stays behind, ProgramData keeps its session data, and the firewall keeps the rules. Windows then refuses to reinstall, or the installer insists the product is "already installed".

multiplicity-purge removes exactly those leftovers, logs every action, and refuses to touch anything else.

        dry run first  ->  confirm  ->  purge  ->  verify  ->  reboot

Not affiliated with Stardock or EdgeRunner. "Multiplicity" is a trademark of its respective owner. This is an independent cleanup utility for people who already decided to uninstall.

Quick start

:: 1. See exactly what would be removed. Changes nothing. No admin needed.
multiplicity-purge.bat --dry-run

:: 2. Run it (asks for confirmation, then self-elevates)
multiplicity-purge.bat

:: 3. Unattended, e.g. from a provisioning script
multiplicity-purge.bat --yes --no-reboot --log C:\logs\mp-purge.log

Requirements: Windows 10/11, cmd.exe. Admin rights for a live run (the script re-launches itself elevated through UAC). A dry run needs no rights at all.

Am I actually using it?

Before removing anything, ask the machine. --status is read-only and prints what the install is doing right now — role, peers, ports:

multiplicity-purge.bat --status

 --- status ---------------------------------------------------------------
  version     : 4.0.7.2
  service     : RUNNING
  service exe : C:\Program Files (x86)\Stardock\Multiplicity\Multisrv64.exe
  role flag   : Primary=0
  interpreted : SECONDARY - another PC drives this one's keyboard and mouse
  listening   :
   TCP    0.0.0.0:30564   0.0.0.0:0   LISTENING   151788
   TCP    0.0.0.0:30565   0.0.0.0:0   LISTENING   22680
   TCP    0.0.0.0:30567   0.0.0.0:0   LISTENING   151788
  peers       :
   TCP    192.168.1.18:59755   192.168.1.13:30564   ESTABLISHED   22680
   TCP    192.168.1.18:30567   192.168.1.13:49225   ESTABLISHED   151788
  firewall    : 4 of 4 feature rules present
  license     : present
  idd driver  : present (indirect display driver, MP4)
  uninstaller : present

Read it like this:

Options

Exit codes: 0 success · 1 aborted by you · 2 elevation refused · 3 at least one action failed.

What it removes

Feature-by-feature port map, component list and version notes: docs/background.md. Full detail, including what is deliberately not touched: docs/removal-map.md.

Safety design

The script is not "careful by vibes" — it is careful by construction:

1. One choke point. Every mutation goes through a helper (:StopService, :RmDir, :RegDel, :DelFirewall, …). Each helper begins with the dry-run guard, so a dry run cannot mutate.
2. Verify, don't assume. Deletions are confirmed afterwards (if exist, sc query, reg query); failures are counted, not swallowed.
3. Nothing is deleted by pattern. No registry wildcards, no rmdir on a parent of unrelated software. The only wildcard is the Registrations\mp*.bin cleanup inside Multiplicity's own ProgramData folder.
4. Confirmation by typing PURGE. A stray Enter does nothing.
5. Log first, always. %TEMP%\multiplicity-purge.log with a timestamp per action.

No undo. Make a restore point (SystemPropertiesProtection.exe) or a VM snapshot first if the machine matters. The script is written to be readable precisely so you can audit it before running it — it is ~500 lines of batch, and every destructive line is on the same line as its guard.

Verification

Tested against a live Windows 11 machine running Multiplicity 4.0.7.2 as a secondary:

[1/9] Stopping services...        would stop service Multiplicity
[2/9] Ending processes...         would kill process Multipl2_64.exe, Mp2control_64.exe, MP32.exe,
                                  MultiSrv64.exe, MP2Drag.exe, MultiplicityConfig.exe
[3/9] Removing scheduled tasks... (none matched — the CSV parse keeps task paths intact)
[6/9] Removing directories...     Program Files (x86)\Stardock\Multiplicity, ProgramData\Stardock\MP2, ...
[9/9] Verifying leftovers...      service Multiplicity ... leftover
Actions that WOULD run: 25   Skipped: 98   Would fail: 0

A --dry-run on your machine should produce a short, plausible list. If it ever lists a scheduled task or a directory that has nothing to do with Multiplicity, stop and open an issue — that is a bug, not a quirk.

Background

docs/background.md covers what Multiplicity is, its EdgeRunner → Stardock version history, every file and driver an MP4 install places on disk, the port map (30564/30565/30567/30568/30569) and the five specific reasons an uninstall leaves residue. Read it before a purge on a machine you care about.

Install

Three ways, depending on where you are running it from. The skill is a standard SKILL.md folder, so it is not navig-specific — the repo root is a valid skill.

1. Any agent that loads SKILL.md (Claude Code, navig, your own harness) — clone or point at the repo root:

git clone https://github.com/miztizm/navig-multiplicity-purge
cd navig-multiplicity-purge
python main.py --status      # the launcher finds the payload itself; cwd does not matter

main.py resolves multiplicity-purge.bat relative to its own location and defaults to the read-only --status, so a bare invocation can never purge.

2. NAVIG (its native packaging, with status / dry-run / purge as skill commands):

python -m navig skill install github:miztizm/navig-multiplicity-purge/navig-skill/cli-skills/system/multiplicity-purge
python -m navig skill run multiplicity-purge:status --dir ~/.navig/data/store/skills
python -m navig install remove multiplicity-purge

3. No tooling at all — download the script and run it:

curl -L -o multiplicity-purge.bat https://github.com/miztizm/navig-multiplicity-purge/releases/latest/download/multiplicity-purge.bat
multiplicity-purge.bat --status

It is not submitted to the official NAVIG registry — it is packaged here and installable directly from this repo. Windows only (Multiplicity is Windows software); the launcher says so and exits cleanly on other platforms.

Packaging notes, the pillar rationale and the three frontmatter spellings navig disagrees with itself about: navig-skill/README.md.

Development

Single-file batch, on purpose: it must run on a machine where nothing is installed.

• Keep the file ASCII-only and CRLF line endings. Both are enforced in CI (.github/workflows/lint.yml) because cmd.exe misparses LF-only batch files.
• Keep every mutation inside a helper that has the %DRY% guard.
• Prefer if ... goto over multi-line if ( ... ) else ( ... ) — nested blocks in cmd are a reliable source of silent misbehaviour.

License

MIT — see LICENSE. Copyright (c) 2026 miztizm.