Unable to launch your application. Protocol Driver error Xen. App 6. 0 for Windows Server 2. R2 General. We have Xen. App 6 on 2. 00. 8R2 and it was working until a few days ago. Opening any published app in Windows gives this Unable to launch your application. Game Of Thrones Season 5 Episode 10 Sub Indo Goblin. Launch Quick Starts to deploy fully functional software on the AWS Cloud with a single click, following AWS best practices. Automated by AWS CloudFormation. A stepbystep guide for creating snapshots of virtual machines deployed via Azure Resource Manager. Contact your help desk with the following information Cannot connect to the Citrix Xen. App server. Protocol Driver error. The strange thing is that the published apps run fine from a linux box Firefox browser using the version 1. The Windows desktops with either 1. I was thinking that changing the IP address of the server might have caused it, but it did work for a week before the problem above. Ive tried both domain users and local anonymous users with no luck. This is just a simple single server install with Direct connections. Secure Gateway serviceThe XTE service is running and it gives a different error if I disable XTE. There are some Reliability Server errors Event ID 1. CGP downstream data. Some postings say that these errors are not a problem but Im not sure. They seem to have started around the same time as the main problem but cant say for sure on the exact timing. Citrix Quick Launch Manager' title='Citrix Quick Launch Manager' />The published apps are just calc. Any thoughts on whats causing this Its strange since it runs ok under Linux. Thanks in advance.