N/APosted on - 02/02/2013
At the time I attempt to link Microsoft Outlook 2007 or 2010 to Microsoft Exchange Server, I see the 'exchange server unavailable' error. Why this?
Connecting To Microsoft Exchange Server
Your Microsoft Exchange Server is unavailable.
Retry Work Offline Cancel
Why Exchange Server is Unavailable in Outlook 2007/2010
This problem could be occurred if you client computer doesn’t have the configuration of a default gateway. You have to add the DWORD value in the DEfConnectOpts registry.
In Outlook 10:
Start-Run-Type regedit and press Enter.
Locate the following key and click the subkey:
Select New from the edit Menu and click DWORD value.
Then Type DefConnectOpts and press Enter.
Right click DefConnectOpts and click Modify.
Type 0 in the value data box and click OK.
Exit Registry Editor.