Connection to the Microsoft Exchange Server is unavailable

Asked By Jonathon P Smith 20 points N/A Posted on - 03/14/2013

Many users of Outlook 2003 with mailboxes on an Exchange 2003 Server provided report single or together of the following error messages when they attempted to explore single or many Exchange 2010 user Calendars. 

 

Unable to display the folder. The information store could not be opened. 

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

 

 

I personally checked all the computers who are using the outlook, the connection exists but still I see this error why?

 

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• Question Category: Microsoft Office

Best Answer by Taylor B Campos

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Answered By Taylor B Campos 90 points N/A #172702

Connection to the Microsoft Exchange Server is unavailable

Hi there jonathon P Smith

If the default gateway is not configured in outlook client computer this problem will occur.

So to solve this problem there are two ways.

1st – manual way

2nd – automatic way

1st Method (manual) for outlook 2007

Step 1 – Click Start > Run > type regedit and hit enter and open regedit editor

Step 2 – Locate the following path

HKEY_CURRENT_USERSoftwareMicrosoftOffice12.0OutlookRPC

Step 3 – On the right hand side click right mouse button > New > DWORD Value

Step 4 – Give the name as “DefConnectOpts” and hit enter

Step 5 – Set the value to “0” in value data box the click modify

Step 6 – Exit the regedit editor

Note – if it is for outlook 2010 you need to use this path

HKEY_CURRENT_USERSoftwareMicrosoftOffice14.0OutlookRPC

2nd method

Download this software which provided from Microsoft for overcome this issue

How to use? Download it > install > run the program > done

Hope these answers helps you

Taylor B Campos

Thank You

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• Posted on - 03/20/2013
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Answered By Margaret G Haley 0 points N/A #172704

Connection to the Microsoft Exchange Server is unavailable

Hello Jonathon 

To enrich your knowledge abut Outlook problems and solutions visit this Techyv post..

Top 10 Microsoft Outlook 2010 Errors

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• Posted on - 03/17/2014
• Question Category: Microsoft Office