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How do I delete remembered email addresses from Outlook?

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There are two different ways that you can delete the saved/cached versions of email address/accounts. It is possible to delete these entries individually or delete the whole repository.

Deleting entries individually

1. Open a new email message.
2. Type the first few characters of the nickname cache entry that you want to remove from the cache.
3. When the entry appears in the "suggested names" list, use the UP and DOWN arrow keys on your keyboard to select the entry, and then press DELETE on your keyboard.

 

Deleting entire nickname cache

NOTE:  When deleting your entire nickname cache this will delete all suggested email addresses being held. This includes email addresses that you may use that are not in your contacts. If you are unsure if you are wish to delete the entire cache, please follow the instructions above to delete them as needed.

Outlook 2007 - Windows XP

1. Quit Outlook.
2. Click Start, and then click Search.
3. In the Search Companion left-side panel, click All files or folders.
4. In the All or part of the file name: box, type *.NK2.
5. In the Look In box, click to select your local hard disk.
6. Click More advanced options, click to select Search hidden files and folders check box.
7. Click Search.
8. Right-click the .NK2 file with the name of the profile that you want to reset, and then click Rename.
9. Rename the file to profilename.bak, and then press ENTER.
10. Quit Windows Explorer.
11. Restart Outlook.

Outlook will generate a new nickname cache.

Outlook 2007 - Windows 7

1. Exit Outlook.
2. Click Start, and then click Computer.
3. Click Organize, and then click Folder and search options.
4. On the View tab, click to enable the Show hidden files, folders, and drives option.
5. Click OK.
6. On the Start menu, click All Programs, click Accessories, and then click Run.
7. In the Run dialog box, type the following command (including the quotation marks), and then click OK:

C:\ Users\UserName\AppData\Roaming\Microsoft\Outlook
Note: Username in this path is the name of the currently logged on Windows user.

8. Right-click the .NK2 file that has name of the profile that you want to reset, and then click Rename.
9. Rename the file as profilename.bak, and then press ENTER.
10. Start Outlook.

Outlook 2010

1. With Outlook 2010 open, click File , and then click Options.
2. Click the Mail tab.
3. Scroll down to Send Messages, click Empty Auto-Complete List.

Outlook will generate a new nickname cache.

Further instructions can be found on the Microsoft site here.


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