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Download GNS3 for Windows 32 bit

If you use a 32 bit version of Windows, you will need to use GNS3 1.3.13 (or older). 32 bit support was dropped starting with GNS3 1.4.


If it’s possible to update to a 64 bit version of Windows, we recommend to use the lastest GNS3 version if possible. Bugfixes and improved User Experience (UX) are continually being added.

Where I can download the IOU VM?

The IOU VM for GNS3 1.3.13 is available on


If you are looking for an IOU VM release for GNS3 1.4 (or later), was superseded by the GNS3 VM.