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CadMemFree LICENSE Command: Activation, Machine ID and Offline Activation

Published Oct 10, 2026 · 5 min read

Everything about CadMemFree licensing happens at one AutoCAD command: LICENSE. It shows your Machine ID, starts your trial, accepts an activation code, and lets you move a license between machines. This page explains each step — including what to do when your CAD machine has no internet at all.

What the LICENSE command shows

Type LICENSE in the command line and you get:

Your Machine ID — the string we need to issue a code for this PC.
Current status — trial days remaining, free tier, or activated.
Options — paste an activation code, deactivate this machine, or copy the Machine ID.

Trial and the free tier

Days 1–14: full features automatically, no card and no code required.
After 14 days: 10 automatic cleans per day plus 10 manual cleans — free forever.
Optional free registration: type REGISTER [email protected] once. No purchase needed; it simply ties the free tier to you.

Activating with a purchase

Buy a plan on the pricing page.
In AutoCAD, type LICENSE and copy the Machine ID.
Send the Machine ID if prompted (or enter it on the order page), then paste the activation code we send back into the LICENSE dialog.
Restart AutoCAD. Status should read Activated.

One license covers up to 3 PCs and unlocks every AutoCAD version on each machine — no per-version fees.

Offline activation (no internet on the CAD PC)

Activation is verified locally with RSA signatures, so a machine that never goes online can still be activated. You only need a second device for one step:

On the offline machine, run LICENSE and copy the full Machine ID.
From any connected device, send it to [email protected], WeChat cadtools-ai, or use the Offline Activation form.
We reply with a machine-bound, RSA-signed activation code.
Back on the CAD machine, run LICENSE again and paste the code. It verifies locally — no internet needed.

Moving a license to another PC

On the old machine: LICENSE → deactivate.
On the new machine: install the matching ARX, run LICENSE, paste the same code.

Activating on more than 3 machines may cause the license to be blocked, so always deactivate first.

FAQ

Do I need internet to keep using it?

No. Verification happens offline; the server is only contacted in the background to honour remote revocations.

The code is rejected — why?

Usually a copy/paste issue (extra spaces, line breaks, or a missing character). Copy the whole code in one piece. If it still fails, the code may have been issued for a different Machine ID.

What if I reinstall Windows?

The Machine ID can change. Send us the new one and we'll re-issue your code — the same license, rebound.

Does activation touch my drawings?

Never. Licensing is stored in your user profile; CadMemFree only works with memory.

Try it free for 14 days — download CadMemFree or see pricing.