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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.

https://github.com/GNS3/gns3-gui/releases/tag/v1.3.13

note

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 https://github.com/GNS3/gns3-gui/releases/tag/v1.3.13

caution

If you are looking for an IOU VM release for GNS3 1.4 (or later), was superseded by the GNS3 VM.