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0x800401F Error in Outlook 2010 with Exchange 2010

To configure your Autodiscover Record:

You will also need to create one of the following DNS records:

A record for autodiscover.domain.com
pointing to 66.129.85.151

OR

CNAME record for autodiscover.domain.com
pointing to autodiscover.myhostedservice.com

Once the record has been created, some DNS servers to not auto-refresh, so this change make take several hours before going into effect.

Last, you may need to force Outlook to download the Offline Address Book. You may do this by selecting:

Send/Receive
Send/Receive Group
Download Address Book
Uncheck "Download changes since last Send/Receive" and select OK

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