Take the 2-minute tour ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.

After upgrading a domain from Exchange 2003 to Exchange 2010, I cannot access the public folders from Outlook 2003 or Outlook 2007. I can access the public folders from OWA. The error message in Outlook 2003 is:

Unable to display the folder. Microsoft Office Outlook could not access the specified folder location. Could not open the item. Try again.

So far, trying again has not helped. :-P

According to the Outlook RPC diagnostic window, Outlook is connecting to the Exchange 2010 server when it tries to get the public folders.

share|improve this question

1 Answer 1

More background before I detail the solution: the Exchange 2010 server is a new Dell R510 with onboard dual Broadcom network adapters, running Windows Server 2008 SP2 64-bit.

I worked with MS tech support to resolve this. After the tech went over the well-documented items (correct Active Directory settings, client/server encrypted communications, Best Practices Analyzer), he decided that it was a basic communications problem. He made the following changes; we're not sure which ultimately fixed it:

  • Disabled IP checksum offload
  • Disabled Receive Side Scaling
  • Disabled TCP chimney offload
  • Changed the network adapter order (Network Connections/Advanced/Advanced Settings) so the enabled adapter had precedence over the disabled adapter

Public folders now work, and other communications errors I had been seeing on the server disappeared.

If I had bothered to watch TCP traffic with Wireshark, I would have seen that TCP checksum offload wasn't working. This is something I've seen frequently with Dell servers that use Broadcom network adapters.

Take-home lesson: Broadcom adapters suck have certain issues; so you should disable acceleration or get an add-in network adapter.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.