Can't open facebook with any network or browser

Yep ... your DNS does not find Facebook.

If you know how, set your DNS manually to:
  • 1.1.1.1
  • 8.8.8.8
and retry
 
Yep ... your DNS does not find Facebook.

If you know how, set your DNS manually to:
  • 1.1.1.1
  • 8.8.8.8
and retry
By the way thinking about it, how is it possible that the DNS is the problem if trying with another connection/network (like android hotspot of my phone) it still can't load facebook?
 
If you can't ping FB using the name, then the browser can't translate the name into the proper IP address to open the page.
 
I see, so what does this mean? Do you know any other solutions I could try? Thanks again for trying to resolve my problem!
 
Done this M A N Y times. If you want to go thru the whole sequence:
  • disable ALL addons & extensions
  • empty the browser cache
  • quit the browser
That enables the browser to perform as best possible. But ALL browsers depend upon TCP and the ability to PING the address as well as Ping using the NAME.

Until Ping By Name works, no browser will work.
 
Did you change your DNS settings? You should NOT have any PROXY, accept DHCP for IP address and set manual DNS 1.1.1.1 + 8.8.8.8
 
BTW: If you're accessing FB at work, you should EXPECT failure by the admin's choice of settings.
 
This is an issue with your DNS cache.

login is Admin and then
get a command prompt
then type

IPCONFIG /FLUSHDNS
Successfully flushed the DNS Resolver Cache.​
net stop "dns client"
The DNS Client service is stopping.​
The DNS Client service was stopped successfully.​
 
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