How to clear the Outlook autocomplete cache

  • Synopsis

    This guide will show you how to clear the Outlook autocomplete cache.
  • Applicable to

    All hosted Exchange accounts.
  • Prerequisite

    • a hosted Exchange account.
  • How to

    There are 2 ways of fixing this issue: #550 5.1.1 RESOLVER.ADR.ExRecipNotFound; not found ##

    Easy method:

    1. Start typing the email address you would like to clear from the cache until outlook displays it .
      MSO_ClearCache_1
    2. Press the down arrow key to select the email address
    3. Press the delete button.

    More involved method:

    Note: It will allow you to clear all the entries from the address cache. (outlook.nk2)
    1. Close Outlook and make sure it is not running using the task manager.
    2. Open Windows Explorer and Paste %APPDATA%\Microsoft\Outlook into the address bar.
      MSO_ClearCache_2
    3. Delete the file Outlook.nk2.
      MSO_ClearCache_3

    Outlook 2010 only:

    Go to FileOptionMail, and then click on the Empty Auto-Complete List button under the Send Messages header.
    emptyautocompletion

    If you need further assistance, please do not hesitate to contact us.

  • Keywords

    Outlook, Clear Cache
  • 7 Users Found This Useful
Was this answer helpful?

Related Articles

How to configure Outlook 2007 using IMAP (Exchange 2010)

Synopsis This guide will show you how to configure Outlook 2007 with Exchange 2010 using...

How to send emails from multiple FROM addresses in Outlook 2010

Synopsis This guide will show you how to send emails as different accounts in Outlook 2010....

How to open another user's folders (Exchange 2010)

Synopsis How to open the folder of another user. Applicable to All PlexHosted hosted...

How to share a folder with another user in Outlook 2011 for Mac

Synopsis This guide will show you how to share a folder with another user in Outlook 2011...

How to share my Outlook folders (Exchange 2010)

Synopsis This guide will show you how to give someone access to your files in your Outlook...