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Turn Cached Exchange Mode on or off in Outlook 2010

Occassionally you may find that the University address book (the GAL) is not 'up to date' when viewed in Outlook 2010. This is due to Outlook storing or 'caching' a copy of the address book on your computer. To force a refresh of the address book follow the instructions below.

Turn cached mode off

  1. Open Outlook and click on the [Files] tab

  2. The Account Information screen opens:

  3. Click on the Account Settings icon and select [Account settings...] from the drop down menu

  4. The Email Accounts screen opens, select the appropriate account and then click on the Change button:
    email accounts
  5. The Server Settings screen is displayed. Under the sever name field there is a checkbox entitled Use Cached Exchange Mode. Untick this box to force address book synchronization with the server

  6. Click on the Next button
  7. An alert message appears informing you that the change will not come into affect until you have restarted Outlook. Click OK to continue
  8. The Congratulations screen appears. To close the wizard click on the Finish button

  9. You will return to the Email Accounts screen, Click Close to exit.
  10. Restart Outlook to complete the process. On restart you may find Outlook is slow to open up. This is due to the cache being switched off and is expected.
  11. If you check the University Address Book you will see the latest version.

Turn cached mode on

To restore the caching, repeat the above and in step 5 click the Use Cached Exchange Mode checkbox. Again you will need to restart Outlook for the change to be completed.

When you are using Cached Exchange Mode, an e-mail message may remain in the Outbox for up to one minute until the next synchronization with the server that runs Exchange occurs. If you want to send the message immediately, do the following:

  1. Click on the [Send/Receive] tab
  2. In the [Send & Receive] group, click Send All button

  3. Your email will be sent immediately.


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Written by IT Services. Latest revision 27 February 2015