Reference the thread below to see where I started:
I have successfully rolled back my SP4 upgrade to SP3, and now I am having the original problem I was having after the initial SP4 upgrade. All of my Windows XP Professional clients can load the Citrix apps through Program Neighborhood successfully, but the Windows 2000 clients only load blank blue backgrounds when they try to load any application.
I've tried updating a 2000 client to the latest ICA32 client software and get the same result. I can load the applications successfuly from the Windows 2000 Servers hosting the Citrix applications, but not the Professional workstations that need to recieve them. I already searched Citrix KB and found the following article:
This does not solve my problem as I do not even have the indicated registry entry in the 2000 registry on the professional machines. Further, I did make Widows Updates to HALF my 2000 workstations, but ALL of them cannot connect properly.
Help....I have an entrie firm out of business until I get this back up and I'm trying to avoid the $400.00 incident for Citrix support.