Can’t start Dynamips on 127.0.0.1 Port 7200

Step 1: Click “Ok” in GNS3 Error

Step 2: Then click on "Edit"

Step 3: Click on “Preference” tab you will see preference wizard on display screen

Step 4:  Then Clicks on “Dynamips” Tab

Step 5: By default working directory for Dynamips location is C:\Users\User name\AppData\Local\Temp so you need to change it into C:\Program Files (x86)\GNS3\Dynamips

Step 6: Then click on “Test setting”

Step 7: Click on Apply and ok.

Please see screen shot for further step:-