Rpc protocol sequence is not supported domain

[prdcristi]

I have a user that has had a windows xp workstation for years. We are running WINDOWS 2008R2 servers in our domain environment. Yesterday he picked up some kind of virus, then kind that tries to sell you a AV software, but is really a virus in itself. Anyway, we ran our Vipre anti virus as the local administrator. Then I renamed his profile in Windows XP. I removed the machine from the domain and last night I ran ClamWin anti virus as an extra precaution. I tried to rejoin the domain today, but it gave me some difficulty. I finally ranmed his workstation and it let me rejoin. I tried logging in as a domain user but cannot get OUTLOOK to connect to our EXCHANGE 2007 server. I keep getting an error "The RPC Protocol Sequence is not supported". I logged back in as the local administrator and tried to add my domain admin account to the PCs local administrator account. It finds my name when I CHECK NAMES, but when I go to click OK I get the same message "The RPC Protocol Sequence is not supported" I am running out of ideas. I check DNS and everything seems to be running fine. I can ping all devices on the network by name and ip address....all advice is welcome

 

[Cyberat_88]

Did you check services to make sure RPC and its dependencies are started automatically and running ?
Rootkits are known to actually damage windows installations and/or registry, you might want to do a restore to an earlier version or at least sfc /scannow with the install cd.
I ran into that one twice and avoided it manually by stopping all its processes, it leaves files in documents and settings/user and temp directories and installs on startup and services.