Citrix Xendesktop Protocol Driver Error
Error: 1030 - Protocol Driver Error Troubleshooting. Home; About Webster; Protocol Driver Error Troubleshooting Steps and Suggestions Citrix XenDesktop.
Protocol Driver Error Event ID 118 The Citrix server ICA port not responding or The Best Networking Solution for XenApp XenDesktop; Citrix.
Citrix tech note CTX125718, last The customer reported that the Protocol Driver Error message was displayed on the Web browser when the users attempted to.
Jan 16, 2014 Cannot connect to the Citrix XenApp server. Protocol driver error because it seems like an obvious reason for the protocol driver error, XenDesktop.
Trouble shooting the Citrix error/ICA message: protocol driver error
Introduction
I think this is a rather poor chosen error message. Protocol driver error within a Citrix environment can mean so many things. But it comes down to this: the client cannot find the server. So if it were up to me, I d change this message to The ICA client cannot connect to the XenApp server, or even sorter; Cannot connect to the Server.
Troubleshooting
Protocol drive error can have so many causes, and here s a list of things you should check.
1 – Step one is to determine what the problem is, we split that up in 3 groups;
client, the workstation or thin client
transport, network cables/switches/firewall
server, XenApp server/load balancer
To determine which is your case is usually fairly simple:
How much people have the problem.;
1 – usually the client
2 to department size 50-100 – usually transport network
All people cannot login; usually server problems
These figures are indicative, it is very well possible they don t count in your case.
2 – Client problems
Here s a list of things you could check;
is the network cable connected
Is the network driver properly installed
check your IP configuration
check for blocking software like firewalls
check for viruses
check your ICA client version
Sometimes it faster and easier to just replace the whole client, specially with thin clients. Or sometimes a reinstall is faster than troubleshooting.
3 – Transport problems
At one of the faulty clients;
check the IP configuration;
check network card physically, cable, link LED, follow the cable to the outlet.
check the default gateway, see if you can ping the default gateway
check the DHCP settings
try to resolve one of your XenApp servers at the client
ping one of the XenApp servers
Use telnet or putty.exe to see if the port is blocked somewhere during transport, do a:
C: telnet ctxsvr01 1494
If the ICA protocol is listening you should get a black empty screen, with a few ICA s appearing. If not, this means that either the server is not listening on port 1494, or some network component is blocking traffic on this port. This is usually a firewall, so contact your network administrator if you suspect the port is being block underway.
in this example we use port 1494, the default ICA port, this might be different in your environment.
You can easily spot the difference from listening port and a non-listening port by connecting to a port number from which you know for sure no service is listening, for example;
C: telnet ctxsvr01 15121
Telnet usually responds with something like; cannot connect to host, on port 15121
4 – Server problems
If no one can connect to you published applications, or if all people sometimes or always get protocol driver error something might be wrong with your XenApp setup.
Storefront/Webinterface/CAG If you use a Citrix Access Gateway/Citrix Secure Gateway/Netscaler to connect via Storefront/Webinterface to your XenApp/Presentation server farm, rule out these components by connecting to the XenApp servers directly. If connecting via the Program Neighbourhood doesn t pop up protocol driver error s, you are sure it must be your CAG/WI setup. WI Web Interface Things to check in your CAG/WI setup:
Are all STA s configured correctly and responsive. you can turn on logging
Have you chosen the correct access method;
direct
Alternate
Translated
Gateway Direct
Gateway Alternate
Gateway Translated
Double check the access routes, Firewall translations and Gateway settings.
Server general When you connect to your published application using the Program Neighbourhood till shows protocol driver error, it must be the load balancer or one of your XenApp servers. Isolate the issue by replicating the published resource and have it end up at one XenApp server. For each server involved you should check:
ccan you ping the server
check the load balancing, on a XenApp server: qfarm /load
is the IMA service running
is the logon service running
is the server listening on port 1494
try bypassing your entire Citrix setup by connecting with RDP.
Hello there
My environment is:
1. Storefront server
1. Delivery controller
1. Hyper-v host
Xendesktop 7.6 environment is configured with base Storefront URL https://citrix.doma.eu
Connection transport type between Storefront and Delivery controller are also configured with HTTPS
I have public wildcard certificate signed with Digicert . doma.eu which is imported and configured in IIS on both servers and configured with HTTPS bindings.
Everything working fine for my internal users.
They successfully logon to Storefront and open apps and desktops.
Problem is with implementing Netscaler 10.5 VPX Express edition for my external users.
I configured SNIP and MIP addresses.
I created a NS gateway vServer using wizard in the XenApp and XenDesktop integrate with citrix Products where I use the same wildcard certificate, and my vServer status is green upon configuration.
I publish URL: https://citrix.doma.eu on my public DNS which is also doma.eu with public IP address, and that VIP is configured in my vServer also.
On Storefront server I configured Netscaler Gateway options and I enable Remote Access as no VPN.
General settings for Netscaler Gateway:
Display Name: Netscaler
Netscaler Gateway URL: https://citrix.doma.eu
Version: 10.0 or later
Subnet IP address: SNIP addres from my Netscaler appliance
Logon type: domain
Callback URL: nothing
When my external users open external URL they got Netscaler VPN logon prompt.
After they enter their domain credentials they see all apps, but when they try to start them, logon process stuck on Connection in progress and after that they have pop-up message:
Unable to launch your Application. Contact your helpdesk with the following information: Cannot connect to the Citrix Xenapp server. Protocol driver error.
Did anybody have that kind of problem.
Any help would be much appreciated.
