Remote Desktop RPC connection failing

I am unable to connect to my remote W2003 servers using Remote Destop because
I get this error message when attempting a connection: '...RPC server is
unavailable'. Rebooting the domain controller seems to resolve the problem
for a week or two, and then the problem occurs. Exchange active sync RPC
works and I can use Outlook rpc over http. Any suggestions why this is
occurring? Thanks.

it could be the DNS issue. Have you check the DNS status using nslookup? or this troubleshooting tips may help,

Network errors
Resolution: Run the Netdiag /debug command on the server in question to check
any errors. Also check these articles - .RPC Server is Unavailable ...
www.chicagotech.net/neterrors.htm

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"DLS" <(E-Mail Removed)> wrote in message news:4B042491-AA7D-4C6C-B6BD-(E-Mail Removed)...
I am unable to connect to my remote W2003 servers using Remote Destop because
I get this error message when attempting a connection: '...RPC server is
unavailable'. Rebooting the domain controller seems to resolve the problem
for a week or two, and then the problem occurs. Exchange active sync RPC
works and I can use Outlook rpc over http. Any suggestions why this is
occurring? Thanks.