No Office 365 connections via Outlook 2013

Question

I am usually able to connect via Outlook 2013 to mny Office 365 Exchange accounts for email etc. But sinice Saturday 18th July have been unable to do this. Outlook truies to connect andcannot ending up in a "disconnected" status. I have re-installed Office from scratch, no dice.I have disabled Windows Firewall, no diceI have flushed my DNS, no dice. I can pull mail via Outlokk for POP and IMAP no problem. I can also tether my laptop to my phone and pull Office 365 mail etc with no issues. So I know the laptop is fine, the Outlook app is fine and Microsoft hosting Exchange is fine. The issue has to be the network I am connecting over. I cannot ping the 365 addrerss eitherC:\Users\JDarling>ping sky.comPinging sky.com [90.216.128.5] with 32 bytes of data:
Request timed out.Ping statistics for 90.216.128.5:
Packets: Sent = 1, Received = 0, Lost = 1 (100% loss),
C:\Users\JDarling>ping outlook.comPinging outlook.com [132.245.113.194] with 32 bytes of data:
Reply from 132.245.113.194: bytes=32 time=132ms TTL=241
Reply from 132.245.113.194: bytes=32 time=136ms TTL=241
Reply from 132.245.113.194: bytes=32 time=135ms TTL=241
Reply from 132.245.113.194: bytes=32 time=131ms TTL=241Ping statistics for 132.245.113.194:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 131ms, Maximum = 136ms, Average = 133ms Failed pinging: C:\Users\JDarling>ping outlook.office365.comPinging outlook-emeawest.office365.com [2a01:111:f400:9850::2] with 32 bytes of
data:
Request timed out.
Request timed out.Ping statistics for 2a01:111:f400:9850::2:
Packets: Sent = 2, Received = 0, Lost = 2 (100% loss),
Control-C
^C
C:\Users\JDarling>tracert outlook.office365.comTracing route to outlook-emeawest.office365.com [2a01:111:f400:9850::2]
over a maximum of 30 hops:1 * * * Request timed out.
2 * * * Request timed out.
3 * * * Request timed out.
I can use the OWA to get mail, but as I have several mail accounts configured in Outlook and you can only sign in to one 365 account at a time, this is not a workaround I can use. Any ideas what the problem is?   

Answer 1

I'm getting this too; I have an Office 365 account that is provided by my employer.  Around Thursday last week I started to have issues connecting to the mailbox using the Outlook 2016 for Windows Desktop at home. It would show as disconnected and attempting to reconnect would get errors regarding authenitcation. Being an IT professional I did some investigation and also having talked to Microsoft themselves we've narrowed it down to some form of Sky IPv6 configuration, as the Microsoft Exchange expert I spoke too reckons that it's some for of IPv6 Proxy setup at Sky's end, reasons; Around the same time I was having issues with connecting to my O365 mailbox I noticed my Sky Hub has received a firmware update adding several IPv6 related features (Ping, LAN setup, Firewall).I also have Outlook for Android and can connect to my O365 account at home no problem; my Smartphone (Galaxy S4 running Android Lollipop) does not support IPv6.There is nothing wrong with my O365 account and mailbox, Microsoft checked whilst I was looking over their shoulder and I can connect to it via the Web Portal at home.Outlook 2016 can connect to my O365 mailbox via other networks; my employer's wifi network and also whilst at a friend's, their BT Internet wifi network; this indicates that the IPv6 configuration on my laptop is good.I've found a work around; you need to disable IPv6 on your PC's network card until Sky sort out what they are doing regarding IPv6! Navigate to the Control Panel.Go to the Network and Sharing Centre.On the left click "Change Adapter Settings".This will bring up the "Network Settings" form.Right click the connection that is being used (you will probably see two connections if your PC has both an ethernet and wifi card.  The one that is NOT being used will have a RED "X" against it).Choose Properties.Within the "This connection uses the following items" list of items, scroll down until you find "Internet Protocol Version 6 (TCP/IP)" and uncheck it (remove the tick from the box) and click "OK".Restart Outlook; the mailbox should now connect. The question I have what is Sky doing regarding IPv6 introduction/configuration as so far I haven't seen much about it!