In fact, Outlook cached mode will continue to download the offline address book every 24 hours regardless of whether the option is enabled.Note: To locate this option, follow these steps: On the Tools menu, point to Send/Receive, point to Send/Receive Settings, and then click Define Send/Receive Groups. When you click to select the Download offline address book check box and then click Address Book Settings, the Offline Address Book dialog box appears.When a phone number is used from the address book and the normalization rule is applied, clients, such as Lync Phone Edition and Lync Mobile, can use these normalized numbers.
For information about a tool in the Resource Kit specifically for the Address Book service, see Microsoft Lync Server 2013 Resource Kit Tools.
My computer slows down when Outlook shows the "Updating Address Book" status. In computers with slow hard disk drives, such as portable computers, or running Outlook in a Virtual machine, the process of updating the address book can slow down the computer if the hard disk is fragmented.
To improve offline address book download performance, try defragmenting your hard disk.
Support for Outlook 2000 was dropped with Exchange 2007, Exchange 2010 only supports Outlook 2003 (post SP2). In the diagram below you can see this server is performing public folder AND web based distribution, this is probably because you ticked this box when you installed the product.
Exchange 2013 only supports Outlook 2007 (post SP3 and cumulative update), and Outlook 2010 must be at SP1 with cumulative update. For public folder distribution ensure the public folder database is mounted, and at least one server holds a replica.
Do send/receive settings affect automatic 24-hour offline address book downloads?