Outlook could not log on. Unable to authenticate with EX Server


J

jrich77

Details:

I am using Outlook 2003 to connect to Exchanger Server 2003
OS: WinXP
I connect through a VPN to the exchange server. I can ping the server using
the computer name without the domain. I can connect to the server and
explore (\\exchangeservername). However, while attempting create a new
exchange email account and verify/authenticate, I get the following error
message (after a long delay/hang):

"Outlook could not log on. Check to make sure you are connected to the
network and are using the proper server and mailbox name. The connection to
the Microsoft Exchange server is unavailable. Outlook must be online or
connected to complete this action.

I have uninstalled and reinstalled Outlook several times, ran the office
2003 repair tool, verified the RPC registry entries are correct, even added
my server IP to the hosts file. Any ideas what else might be wrong???
 
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N

neo [mvp outlook]

Start Outlook 2003 with the /rpcdiag switch and see if you are able to get a
connection to a Global Catalog (domain controller).
 
J

jrich77

Unable to make the connection. The machine I connect to shows type:referral
so I know my connection is getting to the domain controller. However, from
there, it hangs. Any ideas from this point?
 
N

neo [mvp outlook]

If you haven't done this already, try changing Outlook 2003's authentication
from Kerberos/NTLM to just NTLM. If Outlook was running, you would get at
this setting by r-clicking on outlook today > properties > advanced >
security tab.
 
J

jrich77

You're a genius! It worked. Why would that suddenly have caused a problem?
Not a big deal, just curious. I've been racking my brain on this one for
quite some time.
 
N

neo [mvp outlook]

Kerberos authentication is done over UDP. Some VPN solutions will drop UDP
network packets when they go over a certain size. When this happens, you
can't get authenticated/connected.

/neo
 
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E

eiger3970

neo [mvp outlook] wrote on 08/08/2006 18:16 ET
Kerberos authentication is done over UDP. Some VPN solutions will drop UD
network packets when they go over a certain size. When this happens, yo
can't get authenticated/connected

/ne

"jrich77" wrote in messag
news
You're a genius! It worked. Why would that suddenly have caused
problem
Not a big deal, just curious. I've been racking my brain on this one fo
quite some time

"neo [mvp outlook]" wrote
If you haven't done this already, try changing Outlook 2003'
authenticatio
from Kerberos/NTLM to just NTLM. If Outlook was running, you would ge
a
this setting by r-clicking on outlook today > properties > advance
&gt
security tab


"jrich77" wrote i
messag
news
> Unable to make the connection. The machine I connect to show
> type:referra
> so I know my connection is getting to the domain controller. However
> fro
> there, it hangs. Any ideas from this point
&gt
&gt
> "neo [mvp outlook]" wrote
&gt
>> Start Outlook 2003 with the /rpcdiag switch and see if you ar abl
t
>> get
>> connection to a Global Catalog (domain controller)
>&gt
>> "jrich77" wrot
in messag
>> news
>> > Details
>> &gt
>> > I am using Outlook 2003 to connect to Exchanger Server 200
>> > OS: WinX
>> > I connect through a VPN to the exchange server. I can pin th
>> > serve
>> > usin
>> > the computer name without the domain. I can connect to th
serve
>> > an
>> > explore (exchangeservername). However, while attemptin
create
>> > ne
>> > exchange email account and verify/authenticate, I get th
followin
>> > erro
>> > message (after a long delay/hang)
>> &gt
>> > "Outlook could not log on. Check to make sure you ar
connected t
>> > th
>> > network and are using the proper server and mailbox name. Th
>> > connectio
>> > t
>> > the Microsoft Exchange server is unavailable. Outlook mus b
>> > onlin
>> > o
>> > connected to complete this action
>> &gt
>> > I have uninstalled and reinstalled Outlook several times, ra
th
>> > offic
>> > 2003 repair tool, verified the RPC registry entries ar
correct
>> > eve
>> > adde
>> > my server IP to the hosts file. Any ideas what else might b
>> > wrong??
>&gt
>&gt
>&gt
I can't access the kerberos security option
I right click on 'Outlook Today'...the little icon of a house on the top lef
above all the email folders
I am given the option of 'Standard, Advanced, Web or Customize...'. When
clic
on 'Advanced' it removes the bar along the top of Outlook 2003, including th
little house 'Outlook Today'

Any ideas please

Basically, I just want my Outlook 2007 to connect to my SBS 2008
I've done everything under the sun, including uninstalling Office 2007 an
installing Outlook 2003

See below
1
a
Windows 7 Ultimate 200
Network connecting PC desktop to xxxxxxxxxxSBS
Computer name: Deskto
Full computer name: Desktop.xxxxxxxxxx.loca
Computer description: Deskto
Domain: xxxxxxxxxx.loca

Username: xxxxxxxxxxxx
Password: J..
Error: Logon failure: unknown user name or bad password
O
Username: xxxxxxxxxxdeskto
Password: J..
Error: Logon failure: unknown user name or bad password

b
http://connect installs Launcher.exe. Error: An erro

occurred during the download of Connect Computer. Pleas

go to http://connect and try again.

c.
USB stick with http://connect launcher.exe file gives

error in a Google chrome page: This computer does not

meet the maximum operating system requirements for

running client setup.

d.
Ping 192.168.1.101 0% loss.
Network shows SBS and other client pc.
Network access SBS files.
Network won't access client pc 2. Error: \xxxx is not

accessible. You might not have permission to use this

network resource. Contact the administrator of this

server to find out if you have access permissions. There

are currently no logon servers available to service the

logon request.

2.
a.
Windows XP Professional Version 2002 Service Pack 3
Network connecting laptop xxxx to xxxxxxxxxxSBS.
Full computer name: xxxx.xxxxxxxxxx.local
Computer description: Andy
Domain: xxxxxxxxxx.local

Username: xxx
Password: J...
Error 800: Unable to establish VPN connection. The VPN

server may be unreachable, or security parameters may

not be configured properly for this connection.
Redialling = 60
OR
Username: xxxx
Password: J...
Error 800: Unable to establish VPN connection. The VPN

server may be unreachable, or security parameters may

not be configured properly for this connection.
Redialling = 60

b.
http://connect gives error: Oops! Google Chrome could

not find connect.
via IE, http://connect prompts the dialup dialler.

c.
USB stick with http://connect launcher.exe file gives

error: An error occurred while downloading the Connect

Comuter application. Please run this application again.

d.
Ping 192.168.1.102 0% loss.

e.
Turned off firewall, no connection, turned firewall back

on.

3.
SBS 2008.
Clicked Network,
Connectivity,
Virtual Private Network (VPN connection),
Configure a virtual private network (on right).

a.
Clicked Users and Groups,
double clicked user xxx xxxxx.
changes username from xxx xxxxx to xxx.
Desktop now connects to xxxxxxxxxxSBS.
Laptop has same error failing to xxxxxxxxxxSBS.

4.
Can't add multiple domains.
domain1.com.au
domain2.com
domain3.com
domain4.com

Added email box (e-mail address removed) via Exchange

Management Console.
Microsoft Outlook 2010 still won't add

(e-mail address removed).
Error: The name cannot be resolved. The name cannot be

matched to a name in the address list.

Uninstalled Microsoft Outlook 2007 and installed Outlook

2003.

Turned off anti virus software.
 

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