Cannot start Microsoft Outlook... Cannot access file...

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Trilogy Fable

I cannot open Microsoft Outlook. I get this error message:

" Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. The file

C:\User\[User name]\AppData\Microsoft\Outlook\[email address]_hotmail.ost cannot be accessed. You must connect to Microsoft Exchange at least once before you can use your Outlook data file (.ost)."

> ...

I have not had any problems with Microsoft Office Outlook 2010 for some time, however, it is totally useless now.

I have tried " outlook.exe /resetnavpane" but the above message keeps reappearing and I still cannot access MS Outlook. Any ideas of how to fix the file?
 

Brian Tillman

Senior Member
If this happened to me, I'd use the Mail applet in Control Panel to delete the Hotmail account from the mail profile and then re-add it.



 
E

Ezil Vinoth

Follow the steps below.

1) Remove the Hotmail account from Outlook. Refer to the link below for information on how to remove accounts from Outlook.
http://office.microsoft.com/en-us/outlook/HA012316341033.aspx

2) Delete the .OST file(s) associated with the Windows Live account.

a. Click on Start > All Programs > Accessories > Run.

b. Copy and paste the following text in the Open field and then press "Enter".
%userprofile%\Local Settings\Application Data\Microsoft\Outlook

3) Now configure the Hotmail account using Outlook connector in Outlook.

Refer the link below for information on how to add Windows Live account in Outlook.
http://office.microsoft.com/en-us/outlook/HA102218231033.aspx
 
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