The latest versions of our Products, MicroDrainage, DrawNet(CAD) and Dongle Administrator are now available for download. Details of the new features in the MicroDrainage 2018 can be viewed in our What's New Page.

IMPORTANT: Please read the information below before downloading and installing the latest update, failure to do so may result in problems using the software.

Installing the Software:

MicroDrainage 2018.1.1 is only supported on Windows 7, Windows 8, Windows 8.1, and Windows 10.

In order to use our software, you will need to have Microsoft .NET Framework 4.7 installed on the installation machine. Please download and install this prior to installing our software. Please also make sure that you are using the latest version of Windows Installer on the installation machine.

Please remove the dongle (standalone only) prior to the install and reattach it after the install has completed to allow the new drivers to be installed correctly. If you encounter any HASP errors (installation errors) either during or following installation please refer to the Dongle Driver Reinstallation Instructions.

Please be aware that you will need a activation code in order to use the new version of the software and any old versions will be removed when MicroDrainage 2018.1.1 is installed.

We have supplied all the maintenance contacts for each maintained customer with 2018.1.1 upgrade information including the required activation codes.

To obtain your activation code, please contact the head record contact for MicroDrainage within your organisation in the first instance. Our support team are only permitted to disclose activation codes to maintenance contacts.

Network (LAN/WAN) Installations:

Please ensure that you are running the latest versions of the dongle device driver and license manager on your server before installing our latest versions.

32-bit and 64-bit:

Two versions of MicroDrainage are available to suit both 32-bit and 64-bit installations of Windows. If you have a 64-bit operating system you will see faster analysis speeds and improved support for larger models when using the 64-bit release. The 32-bit version can be used on either version of Windows, but 32-bit users will miss out on the benefits of the 64-bit version.
For further information on how to tell which operating system you are using please see Detecting which Platform.


DrawNet(CAD) replaces MDCAD from WinDes 2013 onwards, in order to use DrawNet(CAD) the DrawNet Module must be available on your dongle.

Note: AutoCAD®/ AutoCAD® Civil 3D® release 2016, 2017, 2018 or 2019 (full version not LT) is required. DrawNet(CAD) works with both 32-bit and 64-bit versions of AutoCAD®/Windows, please download and install the appropriate version to match your operating system.
Note that the latest version of MicroDrainage should always be installed alongside the latest version of DrawNet(CAD).
DrawNet(CAD) will be installed into the C:\Program Files\Autodesk\ApplicationPlugins folder.

Civil 3D MicroDrainage Assemblies:

After installing DrawNet(CAD), a set of MicroDrainage assemblies are installed to the following location:
These assemblies will need to be imported once per user on each machine that uses DrawNet(CAD).

Importing MicroDrainage Assemblies:

To import the MicroDrainage assemblies, follow the steps below:

  1. Go to the "Insert" tab on the Civil 3D ribbon.
  2. Select the "Import > Import Subassemblies" option and the "Import Subassemblies" dialogbox should appear.
  3. Browse for the above file "%ProgramFiles%\AutoDesk\ApplicationPlugins\MDUKDrawNetCADx64.bundle\Contents\
    DrawNetCADAssemblies.pkt" in for the "Source File".
  4. Ensure that the "Import To: Tool Palette" option is checked.
  5. From the drop down list of palettes select the "Create New Palette" option.
  6. Enter "MicroDrainage" as the new palette "Name" and click the "OK" button.
  7. Click the "OK" button to import the MicroDrainage assemblies and close the "Import Subassemblies" dialogbox.

or run the following command from the Civil 3D command line
and follow steps 3-7 above.

Dongle Administrator:

Note: This is only intended for use with network licenses where the system administrator does not wish to install a full version of MicroDrainage onto the server. It is not required for any other purpose as Dongle Administrator is installed as standard with MicroDrainage.

Aladdin Monitor Software:

Aladdin monitor is a utility that enables you to monitor network license usage of a network dongle (it is available only for dongles).


Those users wishing to use the VeriData option within Simulation A.P.T. need to have the Microsoft Access Database Engine installed on their machine. This is automatically included with the latest versions of the Microsoft Office suite. However, if users do not have Office installed they will need to download and install the appropriate version of the Microsoft Access Database Engine.

Please click on the download required and save the file. Double click the saved file and follow the on-screen instructions to install.


MicroDrainage 2018 (32-bit) - Version: 2018.1.1 - Size: 310MB

MicroDrainage 2018 (64-bit) - Version: 2018.1.1 - Size: 306MB

DrawNet(CAD) 2018 (32-bit) - Version: 2018.1.1 - Size: 281MB

DrawNet(CAD) 2018 (64-bit) - Version: 2018.1.1 - Size: 330MB

Dongle Administrator 2018 - Version: 2018.1.1 - Size: 119MB

Pluvius 2018 - Version: 2018.1.1 - Size: 231MB

Device Drivers for dongle (Setup) - Version: 7.41 - Size: 15MB

Device Drivers for dongle (cmd) - Version: 7.41 - Size: 15MB

Network Licence Manager - Version: 8.32 - Size: 16MB

Aladdin Monitor Software - Version: - Size: 2MB

When updating an existing network installation please ensure that the latest Dongle drivers and License Manager are also installed on the server. If client machines are generating dongle warnings following the installation, these machines will also require the installation of the Dongle drivers.

Please note:

In order to use FEH 2013 rainfall data for Design Criteria or to simulate storms with durations of less than 1 hour, you will need to use the .xml descriptor files available from the FEH Web Service rather than the .csv file exports. For more information on how to export these .xml files, please refer to FEH Web Service User Guide, accessible from the following link: https://fehweb.ceh.ac.uk/Content/doc/FEH%20Web%20Service%20User%20Guide.pdf

Although these downloads are believed to be free of any virus, which might affect a computer system into which it is received and opened, Innovyze cannot guarantee this and does not accept responsibility for any damage resulting from the use of these downloads.

Drainage Pipe