CTGIN8247E: Required Hostname: System hostname is not fully qualified

while Installing WebSphere, you may encounter this issue of Hostname qualifier.

WebSphere installation requires fully qualified hostname which means it should have a DNS entry or domain name i.e. .com after the hostname (computer name).

Workaround:

1. Go to Computer Properties
2. You will see a link Change Settings in front of Compute Name (admin access required here)
3. In the Properties window, you will see a button called Change...,click that
4. Below the Computer name, you will see another button called More..., click that
5. This is the place where you give DNS Suffix which makes your Computer Name as Fully Qualified Hostname.
6. Type com (no dot symbol)
7. It will require a Reboot/Restart