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Thank you I will try this as soon as possible and post the results. 
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Thank you I will try this as soon as possible and post the results.

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free tool to repair nk2 <a href="http://www.logindesarrollos.com/nk2/repair-outlook-nk2-file-for-autocomplete-contacts.php" rel="ugc">http://www.logindesarrollos.com/nk2/repair-outlook-nk2-file-for-autocomplete-contacts.php</a><br />
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i would suggest you delete the currupt one and let outlook create the new nk2 file
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free tool to repair nk2 http://www.logindesarrollos.com/nk2/repair-outlook-nk2-file-for-autocomplete-contacts.php [http://www.logindesarrollos.com/nk2/repair-outlook-nk2-file-for-autocomplete-contacts.php]

i would suggest you delete the currupt one and let outlook create the new nk2 file

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In the past I have deleted a corrupt NK2 file this is the newly created one. &nbsp;I will post again when I have tried these options, Thank you for your help. 
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In the past I have deleted a corrupt NK2 file this is the newly created one.  I will post again when I have tried these options, Thank you for your help.

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Following the Instructions at the link and downloading the program worked great, Thanks!
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Following the Instructions at the link and downloading the program worked great, Thanks!

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I have a user that is having a few problems with his NK2 file and Contacts. &nbsp;When he goes to send an email to someone in his contact list (Not the GAL) the address comes back as undeliverable also the address isn't added to the NK2 file. &nbsp;Even on a few of the contacts in the GAL that everyone uses without a problem he still has some come back as undeliverable, and won't add to his NK2 file. &nbsp;If anyone can help out with this I would greatly appreciate it, Thanks!
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I have a user that is having a few problems with his NK2 file and Contacts.  When he goes to send an email to someone in his contact list (Not the GAL) the address comes back as undeliverable also the address isn't added to the NK2 file.  Even on a few of the contacts in the GAL that everyone uses without a problem he still has some come back as undeliverable, and won't add to his NK2 file.  If anyone can help out with this I would greatly appreciate it, Thanks!

Outlook NK2 file and Contacts

Microsoft Outlook is a personal information manager from Microsoft, available as a part of the Microsoft Office suite. Although often used mainly as an email application, it also includes a calendar, task manager, contact manager, note-taker, journal, and web browser.

Outlook

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.