# HTTPS Connection to Exchange 2007 is continuously dropped

• Views 5,281
D

#### denism

Hi. We have the problem with our Exchange 2007, when connecting using

RPC over HTTPS - if the mail box has significantly large items

(3-5Mbs) the Outlook starts continuously loosing the connection going

through states: Connected - Trying to connect... - Disconnected -

Trying to connect... - Connected

This happens only in the case we're using RPC over HTTPS and happens

both outside of the network and inside the network with at least

100Mbit connection.

If we're connected from outside through VPN and using the standard RPC

instead of RPC over HTTPS everything is working just great even on

slow connections.

Did anyone experienced the same issue?

J

#### jamestechman

I have never heard of this. When this occurs have you tried ctrl +

right clicking your outlook icon on bottom right tray, connection

status. Are you getting high latency then normal or not connecting at

all? Are you using NLB? If so; have you tried individually testing one

node at a time?

James Chong (MVP)

MCITP | EMA; MCSE | M+, S+,

Security+, Project+, ITIL

On Apr 8, 3:48 am, denism <dmazour...@gmail.com> wrote:
> Hi. We have the problem with our Exchange 2007, when connecting using
> RPC over HTTPS - if the mail box has significantly large items
> (3-5Mbs) the Outlook starts continuously loosing the connection going
> through states: Connected - Trying to connect... - Disconnected -
> Trying to connect... - Connected

> This happens only in the case we're using RPC over HTTPS and happens
> both outside of the network and inside the network with at least
> 100Mbit connection.
> If we're connected from outside through VPN and using the standard RPC
> instead of RPC over HTTPS everything is working just great even on
> slow connections.

> Did anyone experienced the same issue?

D

#### denism

On Apr 8, 5:24 pm, jamestechman <jamestech...@gmail.com> wrote:
> I have never heard of this. When this occurs have you tried ctrl +
> right clicking your outlook icon on bottom right tray, connection
> status. Are you getting high latency then normal or not connecting at
> all? Are you using NLB? If so; have you tried individually testing one
> node at a time?

> James Chong (MVP)
> MCITP | EMA; MCSE | M+, S+,
> Security+, Project+, ITIL
> > On Apr 8, 3:48 am, denism <dmazour...@gmail.com> wrote:

>
> > Hi. We have the problem with our Exchange 2007, when connecting using
> > RPC over HTTPS - if the mail box has significantly large items
> > (3-5Mbs) the Outlook starts continuously loosing the connection going
> > through states: Connected - Trying to connect... - Disconnected -
> > Trying to connect... - Connected

>
> > This happens only in the case we're using RPC over HTTPS and happens
> > both outside of the network and inside the network with at least
> > 100Mbit connection.
> > If we're connected from outside through VPN and using the standard RPC
> > instead of RPC over HTTPS everything is working just great even on
> > slow connections.

>
> > Did anyone experienced the same issue?-

Hi James,

Yes, I tried to Ctrl+Right Click the "Connection status" - it shows a

enabled, because we're usually working with 100Mbit link to network.

I didn't completely understand the question "Are you getting high

latency then normal or not connecting at all?". When I'm working in

LAN, I'm getting "Connected", "Updating inbox folder: 18 Mb left",

then in some moment it drops, shows "Trying to connect to Exchange",

then shows "Connected", then once again "Trying to connect to

Exchange", the back "Connected", then may stabilize and start

Is the NLB is a "Network load balancing"? If so - we don't use it. And

what Node do you refer to?

Thanks,

Denis

D

#### denism

On Apr 8, 7:01 pm, denism <dmazour...@gmail.com> wrote:
> On Apr 8, 5:24 pm, jamestechman <jamestech...@gmail.com> wrote:

>
> > I have never heard of this. When this occurs have you tried ctrl +
> > right clicking your outlook icon on bottom right tray, connection
> > status. Are you getting high latency then normal or not connecting at
> > all? Are you using NLB? If so; have you tried individually testing one
> > node at a time?

>
> > James Chong (MVP)
> > MCITP | EMA; MCSE | M+, S+,
> > Security+, Project+, ITIL
> >

>
> > On Apr 8, 3:48 am, denism <dmazour...@gmail.com> wrote:

>
> > > Hi. We have the problem with our Exchange 2007, when connecting using
> > > RPC over HTTPS - if the mail box has significantly large items
> > > (3-5Mbs) the Outlook starts continuously loosing the connection going
> > > through states: Connected - Trying to connect... - Disconnected -
> > > Trying to connect... - Connected

>
> > > This happens only in the case we're using RPC over HTTPS and happens
> > > both outside of the network and inside the network with at least
> > > 100Mbit connection.
> > > If we're connected from outside through VPN and using the standard RPC
> > > instead of RPC over HTTPS everything is working just great even on
> > > slow connections.

>
> > > Did anyone experienced the same issue?-

>
>

> Hi James,

> Yes, I tried to Ctrl+Right Click the "Connection status" - it shows a
> enabled, because we're usually working with 100Mbit link to network.
> I didn't completely understand the question "Are you getting high
> latency then normal or not connecting at all?". When I'm working in
> LAN, I'm getting "Connected", "Updating inbox folder: 18 Mb left",
> then in some moment it drops, shows "Trying to connect to Exchange",
> then shows "Connected", then once again "Trying to connect to
> Exchange", the back "Connected", then may stabilize and start
> Is the NLB is a "Network load balancing"? If so - we don't use it. And
> what Node do you refer to?

> Thanks,
> Denis-

More on that - I ran the Outlook.exe /rpcdiag and it shows me a lot of

failure.

The string looks like:

Server name: rpc.server.com

Type: Mail

Interface: Realtek RTL8139

Conn: HTTPS

Status: Established

Req/Fail: 2354/392

Avg Resp: 8

J

#### jamestechman

Can you run your rpc\http test here and see if it comes back with a

clean bill of health if not post any errors.

https://www.testexchangeconnectivity.com/

James Chong (MVP)

MCITP | EMA; MCSE | M+, S+,

Security+, Project+, ITIL

On Apr 8, 12:16 pm, denism <dmazour...@gmail.com> wrote:
> On Apr 8, 7:01 pm, denism <dmazour...@gmail.com> wrote:

>
> > On Apr 8, 5:24 pm, jamestechman <jamestech...@gmail.com> wrote:

>
> > > I have never heard of this. When this occurs have you tried ctrl +
> > > right clicking your outlook icon on bottom right tray, connection
> > > status. Are you getting high latency then normal or not connecting at
> > > all? Are you using NLB? If so; have you tried individually testing one
> > > node at a time?

>
> > > James Chong (MVP)
> > > MCITP | EMA; MCSE | M+, S+,
> > > Security+, Project+, ITIL
> > >

>
> > > On Apr 8, 3:48 am, denism <dmazour...@gmail.com> wrote:

>
> > > > Hi. We have the problem with our Exchange 2007, when connecting using
> > > > RPC over HTTPS - if the mail box has significantly large items
> > > > (3-5Mbs) the Outlook starts continuously loosing the connection going
> > > > through states: Connected - Trying to connect... - Disconnected -
> > > > Trying to connect... - Connected

>
> > > > This happens only in the case we're using RPC over HTTPS and happens
> > > > both outside of the network and inside the network with at least
> > > > 100Mbit connection.
> > > > If we're connected from outside through VPN and using the standard RPC
> > > > instead of RPC over HTTPS everything is working just great even on
> > > > slow connections.

>
> > > > Did anyone experienced the same issue?-

>
> >

>
> > Hi James,

>
> > Yes, I tried to Ctrl+Right Click the "Connection status" - it shows a
> > combo box with different options: "Download Full Items" is always
> > enabled, because we're usually working with 100Mbit link to network.
> > I didn't completely understand the question "Are you getting high
> > latency then normal or not connecting at all?". When I'm working in
> > LAN, I'm getting "Connected", "Updating inbox folder: 18 Mb left",
> > then in some moment it drops, shows "Trying to connect to Exchange",
> > then shows "Connected", then once again "Trying to connect to
> > Exchange", the back "Connected", then may stabilize and start
> > Is the NLB is a "Network load balancing"? If so - we don't use it. And
> > what Node do you refer to?

>
> > Thanks,
> > Denis-

>
>

> More on that - I ran the Outlook.exe /rpcdiag and it shows me a lot of
> failure.
> The string looks like:
> Server name: rpc.server.com
> Type: Mail
> Interface: Realtek RTL8139
> Conn: HTTPS
> Status: Established
> Req/Fail: 2354/392
> Avg Resp: 8-

A

#### Andy David {MVP}

On Wed, 8 Apr 2009 00:48:55 -0700 (PDT), denism <dmazourick@gmail.com>

wrote:

> Hi. We have the problem with our Exchange 2007, when connecting using

> RPC over HTTPS - if the mail box has significantly large items

> (3-5Mbs) the Outlook starts continuously loosing the connection going

> through states: Connected - Trying to connect... - Disconnected -

> Trying to connect... - Connected

>

> This happens only in the case we're using RPC over HTTPS and happens

> both outside of the network and inside the network with at least

> 100Mbit connection.

> If we're connected from outside through VPN and using the standard RPC

> instead of RPC over HTTPS everything is working just great even on

> slow connections.

>

> Did anyone experienced the same issue?

hmmm,wonder if this an issue with IIS. Google

"MaxConcurrentRequestsPerCPU" and "Outlook Anywhere". You should see

some hits.

D

#### denism

On Apr 8, 8:20 pm, jamestechman <jamestech...@gmail.com> wrote:
> Can you run your rpc\http test here and see if it comes back with a
> clean bill of health if not post any errors.

> https://www.testexchangeconnectivity.com/

> James Chong (MVP)
> MCITP | EMA; MCSE | M+, S+,
> Security+, Project+, ITIL
> > On Apr 8, 12:16 pm, denism <dmazour...@gmail.com> wrote:

>
> > On Apr 8, 7:01 pm, denism <dmazour...@gmail.com> wrote:

>
> > > On Apr 8, 5:24 pm, jamestechman <jamestech...@gmail.com> wrote:

>
> > > > I have never heard of this. When this occurs have you tried ctrl +
> > > > right clicking your outlook icon on bottom right tray, connection
> > > > status. Are you getting high latency then normal or not connecting at
> > > > all? Are you using NLB? If so; have you tried individually testing one
> > > > node at a time?

>
> > > > James Chong (MVP)
> > > > MCITP | EMA; MCSE | M+, S+,
> > > > Security+, Project+, ITIL
> > > >

>
> > > > On Apr 8, 3:48 am, denism <dmazour...@gmail.com> wrote:

>
> > > > > Hi. We have the problem with our Exchange 2007, when connecting using
> > > > > RPC over HTTPS - if the mail box has significantly large items
> > > > > (3-5Mbs) the Outlook starts continuously loosing the connection going
> > > > > through states: Connected - Trying to connect... - Disconnected -
> > > > > Trying to connect... - Connected

>
> > > > > This happens only in the case we're using RPC over HTTPS and happens
> > > > > both outside of the network and inside the network with at least
> > > > > 100Mbit connection.
> > > > > If we're connected from outside through VPN and using the standard RPC
> > > > > instead of RPC over HTTPS everything is working just great even on
> > > > > slow connections.

>
> > > > > Did anyone experienced the same issue?-

>
> > >

>
> > > Hi James,

>
> > > Yes, I tried to Ctrl+Right Click the "Connection status" - it shows a
> > > combo box with different options: "Download Full Items" is always
> > > enabled, because we're usually working with 100Mbit link to network.
> > > I didn't completely understand the question "Are you getting high
> > > latency then normal or not connecting at all?". When I'm working in
> > > LAN, I'm getting "Connected", "Updating inbox folder: 18 Mb left",
> > > then in some moment it drops, shows "Trying to connect to Exchange",
> > > then shows "Connected", then once again "Trying to connect to
> > > Exchange", the back "Connected", then may stabilize and start
> > > Is the NLB is a "Network load balancing"? If so - we don't use it. And
> > > what Node do you refer to?

>
> > > Thanks,
> > > Denis-

>
> >

>
> > More on that - I ran the Outlook.exe /rpcdiag and it shows me a lot of
> > failure.
> > The string looks like:
> > Server name: rpc.server.com
> > Type: Mail
> > Interface: Realtek RTL8139
> > Conn: HTTPS
> > Status: Established
> > Req/Fail: 2354/392
> > Avg Resp: 8-

>
> -

The only error posted is a validity of the certificate. And yes, it is

not an SSL granted by Verisign (or something like that), but I have

the root certificate zone trusted on my computer and it shouldn't be a

problem as I know.

D

#### denism

On Apr 8, 8:49 pm, Andy David {MVP}

> On Wed, 8 Apr 2009 00:48:55 -0700 (PDT), denism <dmazour...@gmail.com
> wrote:
>
> >Hi. We have the problem with our Exchange 2007, when connecting using
> >RPC over HTTPS - if the mail box has significantly large items
> >(3-5Mbs) the Outlook starts continuously loosing the connection going
> >through states: Connected - Trying to connect... - Disconnected -
> >Trying to connect... - Connected

>
> >This happens only in the case we're using RPC over HTTPS and happens
> >both outside of the network and inside the network with at least
> >100Mbit connection.
> >If we're connected from outside through VPN and using the standard RPC
> >instead of RPC over HTTPS everything is working just great even on
> >slow connections.

>
> >Did anyone experienced the same issue?

> hmmm,wonder if this  an issue with IIS. Google
> "MaxConcurrentRequestsPerCPU" and "Outlook Anywhere". You should see
> some hits.

Me and one more person is people who tries to connect. We're very

small. At the time of test I was a single person that tried to connect

to Exchange over HTTPS (and that was a LAN)

J

#### jamestechman

Try adding this reg hack and see if it makes a difference.

Error messages when you try to connect Outlook 2007 to Exchange

Server: "The action cannot be completed" or "Your Microsoft Exchange

Server is unavailable" or "Cannot start Microsoft Office Outlook"

http://support.microsoft.com/kb/913843

James Chong (MVP)

MCITP | EMA; MCSE | M+, S+,

Security+, Project+, ITIL

On Apr 8, 4:44 pm, denism <dmazour...@gmail.com> wrote:
> On Apr 8, 8:49 pm, Andy David {MVP}

> > On Wed, 8 Apr 2009 00:48:55 -0700 (PDT), denism <dmazour...@gmail.com
> > wrote:

>
> > >Hi. We have the problem with our Exchange 2007, when connecting using
> > >RPC over HTTPS - if the mail box has significantly large items
> > >(3-5Mbs) the Outlook starts continuously loosing the connection going
> > >through states: Connected - Trying to connect... - Disconnected -
> > >Trying to connect... - Connected

>
> > >This happens only in the case we're using RPC over HTTPS and happens
> > >both outside of the network and inside the network with at least
> > >100Mbit connection.
> > >If we're connected from outside through VPN and using the standard RPC
> > >instead of RPC over HTTPS everything is working just great even on
> > >slow connections.

>
> > >Did anyone experienced the same issue?

>
> > hmmm,wonder if this  an issue with IIS. Google
> > "MaxConcurrentRequestsPerCPU" and "Outlook Anywhere". You should see
> > some hits.

> Me and one more person is people who tries to connect. We're very
> small. At the time of test I was a single person that tried to connect
> to Exchange over HTTPS (and that was a LAN)-

D

#### denism

On Apr 9, 4:07 am, jamestechman <jamestech...@gmail.com> wrote:
> Try adding this reg hack and see if it makes a difference.

> Error messages when you try to connect Outlook 2007 to Exchange
> Server: "The action cannot be completed" or "Your Microsoft Exchange
> Server is unavailable" or "Cannot start Microsoft Office Outlook"http://support.microsoft.com/kb/913843

> James Chong (MVP)
> MCITP | EMA; MCSE | M+, S+,
> Security+, Project+, ITIL
> > On Apr 8, 4:44 pm, denism <dmazour...@gmail.com> wrote:

>
> > On Apr 8, 8:49 pm, Andy David {MVP}

>
> > > On Wed, 8 Apr 2009 00:48:55 -0700 (PDT), denism <dmazour...@gmail.com
> > > wrote:

>
> > > >Hi. We have the problem with our Exchange 2007, when connecting using
> > > >RPC over HTTPS - if the mail box has significantly large items
> > > >(3-5Mbs) the Outlook starts continuously loosing theconnectiongoing
> > > >through states: Connected - Trying to connect... - Disconnected -
> > > >Trying to connect... - Connected

>
> > > >This happens only in the case we're using RPC over HTTPS and happens
> > > >both outside of the network and inside the network with at least
> > > >100Mbitconnection.
> > > >If we're connected from outside through VPN and using the standard RPC
> > > >instead of RPC over HTTPS everything is working just great even on
> > > >slow connections.

>
> > > >Did anyone experienced the same issue?

>
> > > hmmm,wonder if this  an issue with IIS. Google
> > > "MaxConcurrentRequestsPerCPU" and "Outlook Anywhere". You should see
> > > some hits.

>
> > Me and one more person is people who tries to connect. We're very
> > small. At the time of test I was a single person that tried to connect
> > to Exchange over HTTPS (and that was a LAN)-

>
> -

That didn't help at all.

I agree that this is probably not client, but server (e.g. IIS) issue.

As I posted above in the log, we're getting some Autodiscover issues -

probably this is the case... What I see is that Outlook tries to POST

to /Autodiscover/Autodiscover.xml..

Or, probably the easiest way is to disable and then re-enable the

Outlook Anywhere....

J

#### jamestechman

You did that reg hack on the client not the server right?

On Apr 9, 9:29 am, denism <dmazour...@gmail.com> wrote:
> On Apr 9, 4:07 am, jamestechman <jamestech...@gmail.com> wrote:

>
> > Try adding this reg hack and see if it makes a difference.

>
> > Error messages when you try to connect Outlook 2007 to Exchange
> > Server: "The action cannot be completed" or "Your Microsoft Exchange
> > Server is unavailable" or "Cannot start Microsoft Office Outlook"http://support.microsoft.com/kb/913843

>
> > James Chong (MVP)
> > MCITP | EMA; MCSE | M+, S+,
> > Security+, Project+, ITIL
> >

>
> > On Apr 8, 4:44 pm, denism <dmazour...@gmail.com> wrote:

>
> > > On Apr 8, 8:49 pm, Andy David {MVP}

>
> > > > On Wed, 8 Apr 2009 00:48:55 -0700 (PDT), denism <dmazour...@gmail.com
> > > > wrote:

>
> > > > >Hi. We have the problem with our Exchange 2007, when connecting using
> > > > >RPC over HTTPS - if the mail box has significantly large items
> > > > >(3-5Mbs) the Outlook starts continuously loosing theconnectiongoing
> > > > >through states: Connected - Trying to connect... - Disconnected -
> > > > >Trying to connect... - Connected

>
> > > > >This happens only in the case we're using RPC over HTTPS and happens
> > > > >both outside of the network and inside the network with at least
> > > > >100Mbitconnection.
> > > > >If we're connected from outside through VPN and using the standardRPC
> > > > >instead of RPC over HTTPS everything is working just great even on
> > > > >slow connections.

>
> > > > >Did anyone experienced the same issue?

>
> > > > hmmm,wonder if this  an issue with IIS. Google
> > > > "MaxConcurrentRequestsPerCPU" and "Outlook Anywhere". You should see
> > > > some hits.

>
> > > Me and one more person is people who tries to connect. We're very
> > > small. At the time of test I was a single person that tried to connect
> > > to Exchange over HTTPS (and that was a LAN)-

>
> > -

>
>

> That didn't help at all.
> I agree that this is probably not client, but server (e.g. IIS) issue.
> As I posted above in the log, we're getting some Autodiscover issues -
> probably this is the case... What I see is that Outlook tries to POST
> to /Autodiscover/Autodiscover.xml..
> Or, probably the easiest way is to disable and then re-enable the
> Outlook Anywhere....-

D

#### denism

On Apr 9, 6:04 pm, jamestechman <jamestech...@gmail.com> wrote:
> You did that reg hack on the client not the server right?

> On Apr 9, 9:29 am, denism <dmazour...@gmail.com> wrote:

>
> > On Apr 9, 4:07 am, jamestechman <jamestech...@gmail.com> wrote:

>
> > > Try adding this reg hack and see if it makes a difference.

>
> > > Error messages when you try to connect Outlook 2007 to Exchange
> > > Server: "The action cannot be completed" or "Your Microsoft Exchange
> > > Server is unavailable" or "Cannot start Microsoft Office Outlook"http://support.microsoft.com/kb/913843

>
> > > James Chong (MVP)
> > > MCITP | EMA; MCSE | M+, S+,
> > > Security+, Project+, ITIL
> > >

>
> > > On Apr 8, 4:44 pm, denism <dmazour...@gmail.com> wrote:

>
> > > > On Apr 8, 8:49 pm, Andy David {MVP}

>
> > > > > On Wed, 8 Apr 2009 00:48:55 -0700 (PDT), denism <dmazour...@gmail..com
> > > > > wrote:

>
> > > > > >Hi. We have the problem with our Exchange 2007, when connecting using
> > > > > >RPC over HTTPS - if the mail box has significantly large items
> > > > > >(3-5Mbs) the Outlook starts continuously loosing theconnectiongoing
> > > > > >through states: Connected - Trying to connect... - Disconnected -
> > > > > >Trying to connect... - Connected

>
> > > > > >This happens only in the case we're using RPC over HTTPS and happens
> > > > > >both outside of the network and inside the network with at least
> > > > > >100Mbitconnection.
> > > > > >If we're connected from outside through VPN and using the standard RPC
> > > > > >instead of RPC over HTTPS everything is working just great even on
> > > > > >slow connections.

>
> > > > > >Did anyone experienced the same issue?

>
> > > > > hmmm,wonder if this  an issue with IIS. Google
> > > > > "MaxConcurrentRequestsPerCPU" and "Outlook Anywhere". You should see
> > > > > some hits.

>
> > > > Me and one more person is people who tries to connect. We're very
> > > > small. At the time of test I was a single person that tried to connect
> > > > to Exchange over HTTPS (and that was a LAN)-

>
> > > -

>
> >

>
> > That didn't help at all.
> > I agree that this is probably not client, but server (e.g. IIS) issue.
> > As I posted above in the log, we're getting some Autodiscover issues -
> > probably this is the case... What I see is that Outlook tries to POST
> > to /Autodiscover/Autodiscover.xml..
> > Or, probably the easiest way is to disable and then re-enable the
> > Outlook Anywhere....-

>
> -

Sure

D

#### denism

On Apr 10, 3:34 am, denism <dmazour...@gmail.com> wrote:
> On Apr 9, 6:04 pm, jamestechman <jamestech...@gmail.com> wrote:

>
> > You did that reg hack on the client not the server right?

>
> > On Apr 9, 9:29 am, denism <dmazour...@gmail.com> wrote:

>
> > > On Apr 9, 4:07 am, jamestechman <jamestech...@gmail.com> wrote:

>
> > > > Try adding this reg hack and see if it makes a difference.

>
> > > > Error messages when you try to connect Outlook 2007 to Exchange
> > > > Server: "The action cannot be completed" or "Your Microsoft Exchange
> > > > Server is unavailable" or "Cannot start Microsoft Office Outlook"http://support.microsoft.com/kb/913843

>
> > > > James Chong (MVP)
> > > > MCITP | EMA; MCSE | M+, S+,
> > > > Security+, Project+, ITIL
> > > >

>
> > > > On Apr 8, 4:44 pm, denism <dmazour...@gmail.com> wrote:

>
> > > > > On Apr 8, 8:49 pm, Andy David {MVP}

>
> > > > > > On Wed, 8 Apr 2009 00:48:55 -0700 (PDT), denism <dmazour...@gmail.com
> > > > > > wrote:

>
> > > > > > >Hi. We have the problem with our Exchange 2007, when connecting using
> > > > > > >RPC over HTTPS - if the mail box has significantly large items
> > > > > > >(3-5Mbs) the Outlook starts continuously loosing theconnectiongoing
> > > > > > >through states: Connected - Trying to connect... - Disconnected -
> > > > > > >Trying to connect... - Connected

>
> > > > > > >This happens only in the case we're using RPC over HTTPS and happens
> > > > > > >both outside of the network and inside the network with at least
> > > > > > >100Mbitconnection.
> > > > > > >If we're connected from outside through VPN and using the standard RPC
> > > > > > >instead of RPC over HTTPS everything is working just great even on
> > > > > > >slow connections.

>
> > > > > > >Did anyone experienced the same issue?

>
> > > > > > hmmm,wonder if this  an issue with IIS. Google
> > > > > > "MaxConcurrentRequestsPerCPU" and "Outlook Anywhere". You should see
> > > > > > some hits.

>
> > > > > Me and one more person is people who tries to connect. We're very
> > > > > small. At the time of test I was a single person that tried to connect
> > > > > to Exchange over HTTPS (and that was a LAN)-

>
> > > > -

>
> > >

>
> > > That didn't help at all.
> > > I agree that this is probably not client, but server (e.g. IIS) issue..
> > > As I posted above in the log, we're getting some Autodiscover issues -
> > > probably this is the case... What I see is that Outlook tries to POST
> > > to /Autodiscover/Autodiscover.xml..
> > > Or, probably the easiest way is to disable and then re-enable the
> > > Outlook Anywhere....-

>
> > -

>
>

> Sure -

So, this issue continues bothering me... I got new laptop and

installed all the fresh software and have exactly same issue with

Outlook 2007 connecting Exchange 2007.

I'm wondering if opening the support incident will help us.

K

#### KB

On 24 Apr., 22:51, denism <dmazour...@gmail.com> wrote:
> On Apr 10, 3:34 am, denism <dmazour...@gmail.com> wrote:

>
> > On Apr 9, 6:04 pm, jamestechman <jamestech...@gmail.com> wrote:

>
> > > You did that reg hack on the client not the server right?

>
> > > On Apr 9, 9:29 am, denism <dmazour...@gmail.com> wrote:

>
> > > > On Apr 9, 4:07 am, jamestechman <jamestech...@gmail.com> wrote:

>
> > > > > Try adding this reg hack and see if it makes a difference.

>
> > > > > Error messages when you try to connect Outlook2007toExchange
> > > > > Server: "The action cannot be completed" or "Your MicrosoftExchange
> > > > > Server is unavailable" or "Cannot start Microsoft Office Outlook"http://support.microsoft.com/kb/913843

>
> > > > > James Chong (MVP)
> > > > > MCITP | EMA; MCSE | M+, S+,
> > > > > Security+, Project+, ITIL
> > > > >

>
> > > > > On Apr 8, 4:44 pm, denism <dmazour...@gmail.com> wrote:

>
> > > > > > On Apr 8, 8:49 pm, Andy David {MVP}

>
> > > > > > > On Wed, 8 Apr 2009 00:48:55 -0700 (PDT), denism <dmazour...@gmail.com
> > > > > > > wrote:

>
> > > > > > > >Hi. We have the problem with ourExchange2007, when connecting using
> > > > > > > >RPC overHTTPS- if the mail box has significantly large items
> > > > > > > >(3-5Mbs) the Outlook startscontinuouslyloosing theconnectiongoing
> > > > > > > >through states: Connected - Trying to connect... - Disconnected -
> > > > > > > >Trying to connect... - Connected

>
> > > > > > > >This happens only in the case we're using RPC overHTTPSand happens
> > > > > > > >both outside of the network and inside the network with at least
> > > > > > > >100Mbitconnection.
> > > > > > > >If we're connected from outside through VPN and using the standard RPC
> > > > > > > >instead of RPC overHTTPSeverything is working just great even on
> > > > > > > >slow connections.

>
> > > > > > > >Did anyone experienced the same issue?

>
> > > > > > > hmmm,wonder if this  an issue with IIS. Google
> > > > > > > "MaxConcurrentRequestsPerCPU" and "Outlook Anywhere". You should see
> > > > > > > some hits.

>
> > > > > > Me and one more person is people who tries to connect. We're very
> > > > > > small. At the time of test I was a single person that tried to connect
> > > > > > toExchangeoverHTTPS(and that was a LAN)-

>
> > > > > -

>
> > > >

>
> > > > That didn't help at all.
> > > > I agree that this is probably not client, but server (e.g. IIS) issue.
> > > > As I posted above in the log, we're getting some Autodiscover issues -
> > > > probably this is the case... What I see is that Outlook tries to POST
> > > > to /Autodiscover/Autodiscover.xml..
> > > > Or, probably the easiest way is to disable and then re-enable the
> > > > Outlook Anywhere....-

>
> > > -

>
> >

>
> > Sure -

>
>

> So, this issue continues bothering me... I got new laptop and
> installed all the fresh software and have exactly same issue with
> Outlook2007connectingExchange2007.
> I'm wondering if opening the support incident will help us.

Hi, I have had the same issue and found it to be related to the

communication between IIS and Exchange. I you still haven't solved it,

try to look at your third party security apps. For instance antivirus,

firewall etc - you could try disable (or uninstall those apps for a

test).

Best regards,

Kristian Bjørklund, MCP

http://www.datalogik.dk