We upgraded one of our legacy servers from Windows 2000 SP3 to SP4. Since then Citrix has been not working. The current version installed on this server is XPS SP1 FR1. Is there a single hotfix that might fix the issues caused by Windows 2000 SP4? It says to apply XPS SP4 I have to have FR3 which I don't have licenses for. Any suggestions? Matthew Shrewsbury, MCSE+Internet MCSE 2000 CCA Server+ Network Manager