Install MnemosyneC — Windows
Offline-first · No account required · Right-click → Run as Administrator
← Back to homepage · Download v0.1.60
NANO vs FULL Install
MnemosyneC ships one installer that sets up two modes:
| Mode | What it includes | When to use |
|---|---|---|
| NANO | qwen2.5:0.5b (bundled, tiny, instant-on) | First install, low-RAM machines, quick start |
| FULL | Gemma 4 12B (downloaded at runtime via Ollama) | Full substrate power, higher accuracy, needs 8 GB+ RAM |
Start with NANO. You can upgrade to FULL from inside the app: Settings → AI Engine → Switch to Gemma 4 12B.
Five-Step Install Guide
Step 1 — Download
→ Download MnemosyneC-Setup-0.1.60.exe
Before running: verify the SHA-256 hash.
Get-FileHash MnemosyneC-Setup-0.1.60.exe -Algorithm SHA256
Compare to the hash on the GitHub release page. If it matches: proceed. If it doesn’t: do not run the file — download again from the official link above.
Step 2 — SmartScreen Warning
Windows may show a SmartScreen warning: “Windows protected your PC.”
This is expected. MnemosyneC is a new application. SmartScreen reputation is built over time as more users install the same signed binary. The binary is code-signed — SmartScreen is warning about reputation, not about malware.
To proceed:
- Click “More info”
- Click “Run anyway”
If you verified the SHA-256 hash in Step 1, you have confirmed the binary is the exact file we published.
Step 3 — Run as Administrator
Right-click the installer → “Run as Administrator”
Administrator privileges are required to:
- Install the Ollama AI engine runtime
- Register the MnemosyneC service
- Create the substrate directory at
%APPDATA%\MnemosyneC\substrate\
Step 4 — Wait for First-Launch Initialization
On first launch, MnemosyneC initializes:
- Ollama runtime — the local AI engine (bundled)
- Substrate directory — your personal Eblet™ store
- NANO model — qwen2.5:0.5b, pulled from Ollama registry on first run
This takes 1–5 minutes on first run depending on your internet speed (model download) and hardware speed (model initialization). After that: instant-on.
You will see a progress indicator. Wait until the UI shows “Ready.”
Step 5 — Ask It Something
Type a question in the Ask bar. You will get an answer — local, private, no cloud.
Offline test: disconnect from the internet and ask again. It still works.
Post-Install: Upgrade to FULL
To switch from NANO (qwen2.5:0.5b) to FULL (Gemma 4 12B):
- Open MnemosyneC
- Settings → AI Engine
- Select “Gemma 4 12B (FULL)”
- Click “Download & Switch”
- Wait for the model download (~8 GB)
Requirements for FULL: 8 GB+ RAM recommended. 16 GB for comfortable operation. The NANO model remains available as fallback.
Binary Integrity
Every MnemosyneC release is:
- Code-signed — Windows Authenticode signature on the installer
- SHA256-verified — hash published on the GitHub release page
- Append-only substrate — every Eblet™ record is independently verifiable
Your substrate is stored at:
%APPDATA%\MnemosyneC\substrate\eblets.jsonl
This is a plain JSONL file. You can read it, copy it, verify it, and export it at any time.
Troubleshooting
“The application failed to start because its side-by-side configuration is incorrect” → Install Microsoft Visual C++ Redistributable (latest, x64). Available from Microsoft.
“Ollama port already in use” → If you already have Ollama installed, MnemosyneC will use your existing Ollama instance. No conflict. If port 11434 is blocked by firewall, add an exception.
Model download stalls → The NANO model download requires internet access on first launch only. If it stalls: close MnemosyneC, check your connection, relaunch. The download resumes where it left off.
Substrate directory missing after reinstall
→ Your substrate (%APPDATA%\MnemosyneC\substrate\) is preserved across reinstalls. Uninstall does not delete it. If you want a clean slate: delete the substrate directory manually before reinstalling.
Install Guide · MnemosyneC v0.1.60 · Windows