After some Windows updates yesterday on a few Citrix servers. The following KB 2653959 was installed and something strange happen. Users couldn’t login to Citrix and they got the following error.
"<RDP application> Error" Cannot Connect to the Citrix Presentation Server Protocol Driver Error
Note: The system was running Windows 2003 server with presentation server 4.5.
To solve this problem. You have to do the following:
- You have to remove KB2653956 for Windows Server 2003 x86
- After this you have to reboot the server
- Request a Hotfix KB958476 for WIndows Server 2003 x86 ( http://support.microsoft.com/kb/958476)
- Install the Hotfix KB958476 for Windos Server 2003 x86
- Reboot the server
- After the reboot install Hotfix KB2653956 for Windows Server 2003 x86 ( http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=29377)
- Reboot the server
When you have done this test with mstsc ( RDP ) if the connection worked again correctly.
Interesting….thanks for sharing.
This fix worked for me, thanks for the help.
When trying to install the HOTFIX i get the following error, the image file update update.exe is valid but is for a machine type other than the current machine” my machine is a windows 2003 server R2 Enterprise edition, 32bit.
You have to look on the Microsoft page if you use the correct update for the correct server, because I used it for a standard windows 2003 server.
This should rank higher on Google, this actually solved my problem despite the tons of “Protocol Driver Error” solution pages. Cheers!