Outlook must be online or connected to complete this action - prob

[Ehren]

Hello,

I am trying to connect a user using outlook 2007 to his exchange 2007 maibox
and outlook consistently says "The connection to microsoft exchange is
unavailable. Outlook must be online or connected to complete this action"

This is on vista. It is really ticking me off because there is no reason it
should not work. I know the account works because I have connected outlook
to it on a different computer. The particular computer had XP but I dont see
why that would matter. I saw a KB article saying something about this
between outlook 2007 and Exchange 2003 and the zeroconfig registry setting
but this is exchange 2007.

Any help would be appreciated, I'm at my wits end.

 

[Roady [MVP]]

At what point do you get this message? When configuring the mail profile?
Verify that File-> Work Offline is not selected.

 

[Ehren]

After many hours I have figured out the problem. Well I figured out the
problem within an hour or so but the resolution took a while.

The issue was only happening on windows vista machines, and I once just
happened to ping the exchange server (server2008) and it replied back with an
ipv6 address. This made it dawn on me that vista and server08 use ipv6 over
ipv4 if they can and aparently they thought they could because it was enabled
on both. I originally thought it would be sufficient to just uncheck ipv6 in
the connection properties but that did not work.

Eventually I found several things on the internet about how outlook anywhere
wouldnt work on server 08 unless ipv6 was disabled and gave a registry hack
telling you to create a new dword entry with a value of 0xff, however it
would not let you type the 'x'. There were also some concerns expressed
about weather hub transport would have issues with having ipv6 disabled.

Anyway I did end up finding a KB article (929852) which gives several
different options for disabling ipv6 in vista. Since vista = server 2008 it
applies. The only thing is if it tells you to make the value 0x11, just make
the dword a decimal value of 11 and it will work.

Once I disabled that and cleared the dns cache on the system and dns server
everythingn worked fine including pings.

NOTE: I only disabled ipv6 on the server not the clients.

 

[Roady [MVP]]

Good to hear you've got it solved!

After many hours I have figured out the problem. Well I figured out the
problem within an hour or so but the resolution took a while.

The issue was only happening on windows vista machines, and I once just
happened to ping the exchange server (server2008) and it replied back with
an
ipv6 address. This made it dawn on me that vista and server08 use ipv6
over
ipv4 if they can and aparently they thought they could because it was
enabled
on both. I originally thought it would be sufficient to just uncheck ipv6
in
the connection properties but that did not work.

Eventually I found several things on the internet about how outlook
anywhere
wouldnt work on server 08 unless ipv6 was disabled and gave a registry
hack
telling you to create a new dword entry with a value of 0xff, however it
would not let you type the 'x'. There were also some concerns expressed
about weather hub transport would have issues with having ipv6 disabled.

Anyway I did end up finding a KB article (929852) which gives several
different options for disabling ipv6 in vista. Since vista = server 2008
it
applies. The only thing is if it tells you to make the value 0x11, just
make
the dword a decimal value of 11 and it will work.

Once I disabled that and cleared the dns cache on the system and dns
server
everythingn worked fine including pings.

NOTE: I only disabled ipv6 on the server not the clients.