1)Navigate to C:\Windows\System32\drivers\etc and look for file named hosts inside etc folder.
2)Copy the hosts file to Desktop and open the same with notepad.
Let me know whether you can see any Adobe related entries inside Hosts file like 127.0.0.1 activate.adobe.com.......etc??
Here's what's in the "hosts" file:
127.0.0.1 localhost
127.0.0.1 activate.adobe.com
127.0.0.1 practivate.adobe.com
127.0.0.1 ereg.adobe.com
127.0.0.1 activate.wip3.adobe.com
127.0.0.1 wip3.adobe.com
127.0.0.1 3dns-3.adobe.com
127.0.0.1 3dns-2.adobe.com
127.0.0.1 adobe-dns.adobe.com
127.0.0.1 adobe-dns-2.adobe.com
127.0.0.1 adobe-dns-3.adobe.com
127.0.0.1 ereg.wip3.adobe.com
127.0.0.1 activate-sea.adobe.com
127.0.0.1 wwis-dubc1-vip60.adobe.com
127.0.0.1 activate-sjc0.adobe.com
127.0.0.1 lm.licenses.adobe.com
127.0.0.1 192.150.14.69
127.0.0.1 192.150.18.101
127.0.0.1 192.150.18.108
127.0.0.1 192.150.22.40
127.0.0.1 192.150.8.100
127.0.0.1 192.150.8.118
127.0.0.1 209-34-83-73.ood.opsource.net
127.0.0.1 3dns-1.adobe.com
127.0.0.1 3dns-4.adobe.com
127.0.0.1 3dns.adobe.com
127.0.0.1 activate-sea.adobe.com
127.0.0.1 activate.wip.adobe.com
127.0.0.1 activate.wip1.adobe.com
127.0.0.1 activate.wip2.adobe.com
127.0.0.1 activate.wip4.adobe.com
127.0.0.1 adobe-dns-1.adobe.com
127.0.0.1 adobe-dns-2.adobe.com
127.0.0.1 adobe-dns-3.adobe.com
127.0.0.1 adobe-dns-4.adobe.com
127.0.0.1 adobe-dns.adobe.com
127.0.0.1 adobe.activate.com
127.0.0.1 adobeereg.com
127.0.0.1 crl.verisign.net
127.0.0.1 ereg.wip.adobe.com
127.0.0.1 ereg.wip1.adobe.com
127.0.0.1 ereg.wip2.adobe.com
127.0.0.1 ereg.wip3.adobe.com
127.0.0.1 ereg.wip4.adobe.com
127.0.0.1 hl2rcv.adobe.com
127.0.0.1 ood.opsource.net
127.0.0.1 practivate.adobe.ipp
127.0.0.1 practivate.adobe.newoa
127.0.0.1 practivate.adobe.ntp
127.0.0.1 tss-geotrust-crl.thawte.com
127.0.0.1 wip.adobe.com
127.0.0.1 wip1.adobe.com
127.0.0.1 wip2.adobe.com
127.0.0.1 wip3.adobe.com
127.0.0.1 wip4.adobe.com