Frequently Asked Questions

Installation and registration

To get detailed instructions on how to install and register nanoCAD products, please download our Installation and Registration Guide at the nanoCAD Download page.

Licensing and Subscriptions

We provide subscriptions that run for either one year or three years. During the duration of the subscription, you receive free technical support and free upgrades.

With the one-year subscription, you can use nanoCAD for one year, as well as receive, at no charge, all upgrades released during the year. After the year ends, the software stops working; to continue using nanoCAD, renew the license.

The three-year subscription includes a perpetual license. You can use it forever. Technical support and upgrades to new versions are free during those three years, after which you can purchase a one- or three-year subscription to receive ongoing updates and technical support.
Workstation subscriptions run nanoCAD on a single computer only. The license cannot be transferred to another computer.

Network subscription can be used to run nanoCAD on any computer connected to the local network, once the license server software (supplied) is installed. Licenses can be temporarily transferred to computers disconnected from the network, such as for working from home or going on business trips. For more information, please download our Installation and Registration Guide at the nanoCAD Download page.
No. The workstation license cannot be moved between computers. If your computer breaks down, or if you have purchased a new one, then please send an email to with the software serial number and a description of the issue. We will activate the license for your new computer.
Follow these steps:

  1. Download the license server software from our web site at the nanoCAD Download page.
  2. Run LicServSetup.exe.
  3. Request a license, after which you will be prompted to install a License Server. Complete the installation by following the prompts (standard settings can not be changed).
  4. Install nanoCAD on workstation computers.
  5. Connect nanoCAD to the license server by running the Registration Wizard utility (external to nanoCAD), or else by starting nanoCAD and then choosing the “Register Now” option.
  6. Enter the name of your server prefixed by the @ symbol, such as @Server1.
  7. Repeat steps 5 and 6 for each workstation on which nanoCAD is installed.
Please contact nanoCAD technical support through e-mail at We will make the change for you.
The permanent license of nanoCAD lets you run the software in perpetuity. To obtain a permanent license, purchase a three-year subscription, which includes the permanent license and three years of free updates and technical support.
This depends on the length of subscription you licensed:

  • One-year subscription - the program stops working at the end of the subscription period.
  • Three-year subscription - the program continues to keep working after the three-year subscription ends.

In either case, you need to renew your subscription to continue receiving updates, and, in the case of one-year subscriptions, to keep using the software.
The three-year subscription includes three years of upgrades and technical support. If you wish to upgrade nanoCAD products to a new release once the subscription period ends, you should purchase another subscription, either for one year or for three.
Once your subscription expires, please follow these steps:

  1. Go to your Personal account in the nanoCAD licenses section. 
  2. Select the license you want to renew and click the Manage license button. 
  3. In the Renew Subscription section, select appropriate period for renewing your subscription and click the Add to cart button.
  4. After making a purchase, your license will be renewed.

About Add-on Modules

nanoCAD was previously split into several products, each requiring a separate download. If you needed, for example, nanoCAD Construction and nanoCAD Mechanica, then you had to buy a license for each product at full cost, and then download both of them.

As of nanoCAD 21, you can acquire any module you are interested in, paying only the price of the module itself, and then downloading the module. You run all purchased modules with a single nanoCAD license.
The nanoCAD platform consists of the following add-on modules:

  • 3D Solid Modeling – for advanced 3D modeling
  • Construction – for architecture and construction
  • Mechanica - for 2D and 3D mechanical design
  • Raster – for advanced editing scanned images
  • Topoplan – for topographical reliefs and mapping
When you install nanoCAD with an add-on module like Mechanica and Construction, additional shortcuts are created on the desktop:

One shortcut is for launching nanoCAD with 3D Solid Modeling, Raster and Topoplan modules
Additional shortcuts are created for launching nanoCAD with each add-on module you licensed, such as a shortcut for Mechanica and another for Construction.

Construction and Mechanica cannot be run at the same time.
You can add professional modules to the nanoCAD platform. Just go to your personal account and select the product(s) you need. Then click the "Manage license" button and add missing modules to the cart. The price of the module for a 1-year subscription is calculated based on the time remaining until its end.

Accounts and profiles

There is a 'Forgot your password?' link at the bottom of the “Sign in” page. Click on it, and then your password will be resent to you by email.
You can find information of all your licenses of nanoCAD products in your personal account in the nanoCAD license section.

Education program

Yes. We provide students and teachers with free licenses to the latest release of the nanoCAD platform and the full set of add-on modules. To learn more about being eligible for the education license, check out nanoCAD for Students page.

Billing and orders

Payment by credit card
Your payment is securely processed by 2Checkout Services that are certified to the Payment Card Industry Data Security Standard (PCI DSS) Level 1 Certified. PCI DSS is the most important security standard for the card payment industry.
All transactions are made using a SSL connection (128 bytes) provided by VeriSign. The data sent from your browser to the 2Checkout servers is always encrypted. All of our servers are certified McAfee Secure and scanned daily by ScanAlert for known vulnerabilities. Additionally, 2Checkout does not store any sensitive credit card information.
For each completed order, a payment receipt will be sent automatically to the billing e-mail address provided.
To receive a refund of the purchase, you must initiate the return within 15 days of the purchase or renewal date. To do this, contact our support team at

FAQ nanoCAD Free

nanoCAD Free supports DWG file versions up to 2013 only. Please verify the version of your DWG file by following these steps:

  1. Open the DWG file with any text editor (such as Notepad).
  2. At the beginning of the file, you will find a code in the format: AC10XX, where "XX" varies and could be 32, 27, 24, 21, etc.
  3. The code "AC1032" indicates that the file is in the DWG 2018 format. To work with DWG files of this format, upgrade to the nanoCAD Platform.

If your file is version 2013 or earlier and you still encounter issues, attempt to recover the file by using nanoCAD Platform:

  1. Run nanoCAD 23, then call the RECOVER command to open the file.
  2. Unfreeze, unlock and turn on all layers.
  3. Call the RMPROXY command - Nongraphicalproxies to remove proxy objects which do not have a graphic. You can also use the XPROXY command to explode visible proxy-entities.
  4. Use the Purge command to clear waste objects. We also advice to use the PURGE command (works in the command line, without dialog) and use its different options, especially ANnotscales and sorTTable
  5. Select all, then call the Flatten command. You can do it twice, because some objects can be flattened only the second time.
  6. Use the Audit command.
  7. Use the Audit Geometry command twice: first audit z-coordinates, then hatches.
  8. Sometimes it is necessary to repeat steps 3-6 several times to fix the file.
If you're experiencing issues with drawings, such as performance problems or freezing, it's recommended to use the utilities available in the nanoCAD Platform to fix these errors.

After installation try next:

  1. Run nanoCAD 23, then call the RECOVER command to open the file.
  2. Unfreeze, unlock and turn on all layers.
  3. Call the RMPROXY command - Nongraphicalproxies to remove proxy objects which do not have a graphic. You can also use the XPROXY command to explode visible proxy-entities.
  4. Use the Purge command to clear waste objects. We also advice to use the PURGE command (works in the command line, without dialog) and use its different options, especially ANnotscales and sorTTable
  5. Select all, then call the Flatten command. You can do it twice, because some objects can be flattened only the second time.
  6. Use teh Audit command.
  7. Use the Audit Geometry command twice: first audit z-coordinates, then hatches.
  8. Sometimes it is necessary to repeat steps 3-6 several times to fix the file.
Please make sure that the serial number you are using starts with the correct prefix, which should be NC50AS. You can verify this information on your account page for nanoCAD Free.
nanoCAD Free licenses cannot be activated on multiple computers as network licensing is not available for this version. Each license permits activation on a single computer only. For network licensing options, upgrade to the nanoCAD Platform.
The nanoCAD Free (v. 5) was released before before Windows 10 in 2013. We can’t guarantee its compatibility with the Windows OS 10/11. Whenever users experience these issues, we recommend completely uninstalling nanoCAD Free (v. 5) following the instructions provided below.

  1. Uninstall program via Control Panel.
  2. Check and delete folder with NanoCAD files in: C:\Program Files\Nanosoft AS\
  3. Check and delete folder with NanoCAD files in: C:\ProgramData\Nanosoft AS\
  4. Check and delete folder with NanoCAD files in: C:\Users\\AppData\Roaming\Nanosoft AS\
  5. Call REGEDIT in command line and check if this brunch is clean: HKEY_CURRENT_USER\SOFTWARE\Nanosoft AS
* (note that ProgramData and AppData might be hidden in Windows)

Then, install a more recent version of nanoCAD, such as the nanoCAD Platform. Start the newer version, close it, and then attempt reinstalling nanoCAD Free (v. 5). This process may resolve the compatibility issues.
This error indicates a system malfunction in the operating system (OS) that altered the current date and time to a future date. Despite the current time settings appearing correct, the presence of files and Windows events with inaccurate dates has led the OS to determine the current date based on these files, not the date shown in the taskbar.

To address this issue, there are two primary solutions:

  1. Reinstall the OS.
  2. Identify and modify the creation date of files generated during the system failure. This step may also require clearing all Windows event logs.

It's important to note that this error stems from an internal OS failure and is not related to nanoCAD. If attempts to synchronize the clock and correct file dates are unsuccessful, the problem might be with the BIOS battery; replacing it can resolve the issue.
If the suggested solutions don't fix the issue, your next steps are to either reinstall the operating system or install nanoCAD on another computer.
You can access the nanoCAD User Guide in PDF format in the following ways:

Navigate to the directory: C:\Program Files (x86)\Nanosoft AS\nanoCAD en 5.0\help.
Go to the Start menu and look for the nanoCAD folder.
For more educational resources, check out the nanoCAD YouTube channel and visit the nanoCAD Learning Center.
Yes, you can use nanoCAD Free (v. 5) for commercial purposes.
nanoCAD Free (nanoCAD v.5) is available only in English. You can also request an Italian version of nanoCAD Free from our Italian dealer Fabrizio Pieri -
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