Windows Server 2008 R2
Exchange Server 2010
Windows 7 Clients
Outlook 2007(fully patched)
When a user clicks "Scheduling Assistant" in outlook 2007 you immediately get a message popup saying...
"The connection to Microsoft exchange is unavailable. Outlook must be online or connected to complete this action"
I will include a Screenshot when allowed
Outlook is connected and no other issues/symptoms are present. out of office assistant works, everything else works.
You CAN access and use Scheduling assistant from the OWA
I did a wire-shark capture to see if maybe some packet would tell me what was going on however im not sure what i was seeing, its a 3 packet response.
10.000000000xx.xx.xx.Hostxx.xx.xx.Server DCERPC290Request: call_id: 43, Fragment: Single, opnum: 7, Ctx: 0
Header checksum: 0x0000 [incorrect, should be 0x5066 (may be caused by "IP checksum offload"?)]
20.001848000xx.xx.xx.Hostxx.xx.xx.Server DCERPC274Request: call_id: 44, Fragment: Single, opnum: 9, Ctx: 0
Header checksum: 0x0000 [incorrect, should be 0x5075 (may be caused by "IP checksum offload"?)]
30.203054000xx.xx.xx.Hostxx.xx.xx.Server TCP5465082 > 6008 [ACK] Seq=457 Ack=265 Win=255 Len=0
Header checksum: 0x0000 [incorrect, should be 0x5150 (may be caused by "IP checksum offload"?)]