GNS3 is a Graphical Network Simulator that allows emulation of complex networks. This program is similar to VMWare or Virtual PC that are used to emulate various operating systems in a virtual environment. These programs allow you to run operating systems in a virtual environment on your computer. GNS3 allows the same type of emulation using Cisco Internetwork Operating Systems (Cisco IOS). Here are some other articles I have written on Graphical Network Simulator (GNS3); how to install GNS3 on macOS, how to connect GNS3 to the internet on Windows, how to make a router function as a switch in GNS3, and Error: Failed to open a session for the virtual machine GNS3 VM.

Here are the various methods to uninstall GNS3 in your Windows environment.

1: Windows Settings:  There are other methods to launch this as well.
- Click on the Windows Start menu and 
- Click on Settings as shown below

Alternatively: Open WinX menu by holding Windows and X keys together or by (right-clicking on the Windows Start Menu) and then click Programs and Features.

This will open up the Windows Settings, as shown below

– Click on Apps

This will open up the Apps and Feature Windows
– Click on Apps and Features and
– Search for GNS3 as shown below

Now, click on GNS3 and select Uninstall.

You will get a warning message asking you to confirm the deletion as shown below.
– Click on Yes

This will continue with the uninstallation process and delete all keys and files etc as shown below

The following message below will be prompted if GNS 3 is successfully uninstalled.

2: Control Panel: Search for Windows Control Panel as shown below

This will open up the “Control Panel” Window. Click on Program or “uninstall a program” as shown in the figure below.

Next, search for GNS3 in the list of installed programs and click on it.
– Next select uninstall as shown below.

You can also right click on the program and then select uninstall as shown below. This will ensure GNS3 is uninstalled.

To continue from here, follow the steps discussed in the first method.

I hope you found this blog post helpful. If you have any questions, please let me know in the comment session. I welcome you to follow me on Twitter and Facebook.