Working Solution To Fix ‘Outlook 2007 Microsoft Exchange Is Unavailable’ Error

exchange_server_is_unavailable

Often while starting Microsoft Office Outlook 2007 in order to configure a Microsoft Exchange Server 2003 mailbox for being utilized with Outlook 2007, one may experience the symptoms such as :

  • One may receive one of the below given error messages:

Error message 1

The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.

Error message 2

The action cannot be completed. The connection o Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action”.

Error message 3

The action cannot be completed. The connection to Microsoft Exchange is unavailable. Your network adapter does not have a default gateway.

  •  On clicking ‘OK’, the Microsoft Exchange dialog box appears. In this dialog box, the LDAP path (DN) of the Exchange 2003 mailbox appears in the Microsoft Exchange server box.
  • On clicking ‘OK’ the Outlook 2007 Startup Wizard initializes or the Add new E-mail Account dialog box appears. Now when one follow the steps in this wizard or click Next in the New E-mail Account dialog box, the e-mail account get configured successfully.

‘Outlook 2007 Microsoft Exchange Is Unavailable’ problem occurs if the below mentioned conditions are true :

  • One do have a Microsoft Exchange Server 2007 server running the Client Access Server (CAS) role in the Exchange 2003 organization.
  • Any of the below mentioned registry values set on the computer having Outlook 2007 installed in it:

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\Outlook\AutoDiscover

Value name: ZeroConfigExchange
Value type : REG_DWORD
Value data : 1

HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\AutoDiscover

Value Name : ZeroConfigExchange
Value type : REG_DWORD
Value data : 1

  • One’s mailbox is located on a mailbox server running Exchange Server 2003
  • One do not have an Outlook profile configured before starting the Outlook 2007.

So, because of all the above mentioned scenarios “Outlook 2007 Microsoft Exchange Is Unavailable” error generates prohibiting the users from utilizing MS Outlook effectively. Therefore to fix ‘Outlook 2007 Microsoft Exchange Is Unavailable’ error it is advised to implement the below discussed steps :

Remove the ZeroConfigExchange registry data

Eliminate the Group Policy or the system policy which sets the below mentioned registry entry:

HKEY_CURRENT_USER\Software\Policies\Microsoft\Office\12.0\Outlook\AutoDiscover

Value name : ZeroConfigExchange
Value type : REG_DWORD
Value data : 1

Remove the below given non-policy registry data:

HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\AutoDiscover

Value name : ZeroConfigExchange
Value type : REG_DWORD
Value data : 1

Move the mailbox to an Exchange 2007 mailbox server

This trouble do not occurs in a case if the mailbox is located on an Exchange 2007 mailbox server.

Hopefully these instructions will surely fix resolves the issue but if not then instead of getting worried it is advised to fix ‘Outlook 2007 Microsoft Exchange Is Unavailable’ error by making usage of ‘PST Repair Tool’. This tool has been labeled very effective in it’s working skills. It includes a very simple and interactive user-interface. This tool being integrated with numerous powerful and enhance programming skills is capable of fixing ‘Outlook 2007 Microsoft Exchange Is Unavailable’ error very easily and quickly. Apart from that it also resolves several other MS Outlook errors conveniently.

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