There are a multiple reasons for why an Outlook client can receive the 0x8004010f sync error. Unfortunately, 0x8004010f is just a generic MAPI error and will show up for a variety of problems.

Here is what the error looks like under err.exe (Microsoft Exchange Server Error Code Look-up Tool):

C:\WXP\system32>err 0x8004010f# for hex 0x8004010f / decimal -2147221233