outlook 2007 0x80040115 Exchange 2003 https/rpc

Hello Techgurus,

I have a Windows XP SP3 laptop that is running Outlook 2007. The user of
this laptop is unable to send emails. Get following error message:

"Task Microsoft Exchnage Server reported eror (0x80040115): The conection to
the Microsoft Exchange Server is unavailable. Outlook must be online or
conected to complete this action"

Outlook connect to exchange server through https/rpc

Outlook 2007 establishes connection fine ( takes while) and then it looses every few second. and the user can
receive emails fine.

I have tried the following troubleshooting:
- Rebooted the computer; the problem still exists
- recreated outlook profile -  problem still exists
- The user can log in to OWA and everything works fine there
- 3 out of 6 user connecting to the same Exchange server exchange 2003 has this problem

Please help!

Many thanks
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Put in the connection timeouts mentioned in this article:

it will change the RPC conection timeout of outlook from 45 seconds to 5 minutes.

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any update?
DanbrascoAuthor Commented:
Hi MegaNuk3,

you link did not help!

Many thanks,
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Have you checked for 3rd party add-ins in Outlook that may be causing this?
Look for add-ins like MAPI-Lab Duplicate EMail Remover and Sperry Software Duplicate Email Eliminator

Or try loading Outlook with /safe or /noextensions to see if the problem persists.
DanbrascoAuthor Commented:
I restarted the router and it resolved the issue. Funny thing is that internet was working fine at that time but i restared it anyways.
DanbrascoAuthor Commented:
please close this question
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