I tried to configure a Citrix Web Interface 5.3 server in conjunction with Citrix Presentation Server / XenApp 4.0 and a NetScaler. It is possible to login, but I cannot launch an application. When trying to launch an application I receive the following error message:

An error occurred while making the requested connection

I found an related article on the Citrix website. This article applies to Web Interface 5.2, but also works for Web Interface 5.3 The symptoms in the EventViewer for Web Interface 5.3 are different, but gives me more specifications about the problem. In the event log of the Web Interface 5.3 server you will receive the following error message.

After changing the RequireLaunchReference parameter in \inetpub\wwwroot\Citrix\XenApp\Conf\WebInterface.conf applications can be launched without any problems.

Add On: if the above solution doesn’t work, then a second solution for this problem can be found here

The following two tabs change content below.

• Bio
• Latest Posts

René Jorissen

Co-owner and Solution Specialist at 4IP Solutions

René Jorissen works as Solution Specialist for 4IP in the Netherlands. Network Infrastructures are the primary focus. René works with equipment of multiple vendors, like Cisco, Aruba Networks, FortiNet, HP Networking, Juniper Networks, RSA SecurID, AeroHive, Microsoft and many more. René is Aruba Certified Edge Expert (ACEX #26), Aruba Certified Mobility Expert (ACMX #438), Aruba Certified ClearPass Expert (ACCX #725), Aruba Certified Design Expert (ACDX #760), CCNP R&S, FCNSP and Certified Ethical Hacker (CEF) certified. You can follow René on Twitter and LinkedIn.

Latest posts by René Jorissen (see all)

• MacOS Big Sur and SSLKEYFILELOG - November 23, 2021
• ClearPass, Azure AD, SSO and Object ID - August 12, 2021
• ClearPass – custom MPSK - July 20, 2021