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SBS 2011, Exchange 2010, Clients can not connect after SBS 2003 to SBS 2011

Dear all,

we have a very severe issue here.
After doing a migration from SBS/Exchange 2003 to SBS 2011/Exchange 2010 client can not in the end not connect to the Exchange server (2010).
The client is asking for username and password as it would be connect via Exchange Anywhere.
The login dialog pops up again and again until you stop it.

Outlook web access is working well.

During the migration the clients could connect to exchange and got the new server settings.

The last step during the migration was to take over the users and group accounts.
After that and the final restart it could not connect anymore.

As the former support people were working very intense with group-driven access to nearly everything my guess is that people do not have proper rights to connect to the store.

This to bad: Working over 40 hours during the easter weekend and starting today with the final changes screwing everything up.
My colleague didn't show up today so I have 14 people to support and that exchange issue...

As I am totally tired and unconcentrated due to a lack of sleep can you please point me to the direction where to look for it?

thank you so much!

best regrads,

2 Solutions
Have you tried by reconfiguring user's outlook profile???? also whats the position of moved mailboxes, if the mailboxes have been successfully moved then remove the move request from EMC.
ChristianWirthAuthor Commented:
The problem was that the RPC-service was not started.
As different topics stated that after migrating from SBS 2003 this is a known issue.

After restarting the server RPC didn't came up. Using Automatic with delay fixes this issue.

Thanks for your input, I could fix with both answers different other issues!
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