Rarely, yet annoyingly, I cannot access my websites with my laptop.
If I try to open one of them in a browser, I get the classic "This webpage is not available" error.
When I try to ping one of them, the following happens:
ping domain.ext Pinging domain.ext [server.ip.address.here] with 32 bytes of data: General failure. General failure. General failure. General failure.
Pinging the IP address does not solve anything (DNS works by the way). Changing the domain to another one pointing to my server does not change anything. Flushing DNS does not change anything.
I can ping other websites, I can ping my computer as well.
C:\Windows\System32\Drivers\etc\hosts is at default settings.
All other websites of the world work. Only mine present these issues.
If I try to browse my websites with my smartphone, connected to the same network, everything works.
This happens on different networks (home, work, friends, ..). A reboot usually fixes the issue.
I came to the conclusion that it is related to my laptop. It is a Thinkpad W530 running Windows 8 Pro x64.
The firewall is Windows built in firewall with default rules. Antivirus is Windows Defender.
What could it be the issue? And why would it happen only with a single IP address? Especially, why the one of my websites?