Workaround when Outlook 2007 cannot connect to Exchange Server

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

When you try to connect Microsoft Office Outlook 2007 to Microsoft Exchange Server, you experience any one of the foll Owing Symptoms:if your Outlook profile has been automatically configured, your may receive the following error message:th E action cannot be completed. The connection to the Microsoft Exchange Server is unavailable. Your network adapter does not have a default gateway. If your Outlook profile has been manually configured, your may receive the following error Message:your Microsoft Exchange The Server is unavailable to example, this error may occur then you have a existing profile it was previously connected T o The Exchange Server, and then your lose the setting for your default gateway. In the scenario, if you clickCheck NameTo verify your settings in thee-Mail Accountsdialog box, you may receive the following error Message:outlook cannot log on. Verify that you are connected to the network and are using the proper server and mailbox name. The connection to the Microsoft Exchange Server is unavailable. Your network adapter does not have a default gateway.

When you are try to connect Outlook 2007 to Microsoft Exchange Server 2003 by using RPC over HTTPS, your may receive the follow ing error message:cannot start Microsoft Office Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The attempt to log in to Microsoft Exchange has failed. These problems are due to: This problem may occur if the Outlook 2007 client computer does not have a default gateway configured. 。  Look literal because Outlook does not have a default gateway set. WORKAROUND: If You cannot configure a default gateway for your network settings, can work around this problem by adding a DW ORD value, named Defconnectopts to the following registry subkey:hkey_current_user/software/microsoft/office/12.0 /outlook/rpc to add this DWORD value, follow these steps.

ImportantThis section, method, or task contains steps, "Tell me," to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure so you follow these steps carefully. For added protection, then the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how and restore the registry, click the following article number to view the article In the Microsoft knowledge base:322756 (http://support.microsoft.com/kb/322756/) How-to-back and restore the Regist Ry in Windows ClickStartClickRun, type regedit in theOpenbox, and then clickOK. Locate and then click the following SUBKEY:HKEY_CURRENT_USER/SOFTWARE/MICROSOFT/OFFICE/12.0/OUTLOOK/RPC (no words, You can build one yourself) on theEditmenu, point toNew, and then clickDWORD Value. Type defconnectopts, and then press ENTER. Right-clickdefconnectopts, and then clickModify. In theValue Databox, type 0, and then clickOK. Exit Registry Editor.

OK, Problem solving