Ubuntu: Cannot access outlook.office365.com


I must say I'm a new Ubuntu user. I'm using 14.04 LTS version. I always keep my Ubuntu updated. I've an office365 account and I already configured it in Thunderbird. It was working fine, so far. Today I've installed a new update and outlook.office365.com has become inaccessible. Neither Thunderbird not browsers (Chrome, Firefox) can access this host. I get timeout in both cases. If I try to look up it I get this:

$ nslookup outlook.office365.com  ;; Truncated, retrying in TCP mode.  ;; connection timed out; no servers could be reached  

It's also timeout. So I don't think this problem is an application specific problem because I get the same error in all cases. My precise version is:

$ uname -a  Linux lomniczi-pc 3.16.0-38-generic #52~14.04.1-Ubuntu SMP Fri May 8 09:43:57 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux  

Firewall is inactive (ufw). I'm sure outlook.office365.com can be resolved and replies since I've checked it on Windows; I can use my account from browser and I can use Outlook application to access my emails connecting to this host. Do you have any ideas?


From Terminal

cd /etc  ls  

Look for resolv.conf, if it exists then,

sudo mv /etc/resolv.conf /etc/backup.resolv.conf  

This copies the file to a new file name in case you need it back.

Exit Terminal, go to Firefox and try your URL. It should work fine.


Change permanently the nameservers of the file /etc/resolv.conf for public dns servers as google public dns server.

nameserver  nameserver  

This could be because the dns server that you use block your access (this change solve the problem in my case, I fix this today).

Note:If u also have question or solution just comment us below or mail us on toontricks1994@gmail.com
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