Error when I launch XenApp 6.5 Published app - cannot connect to XenApp Server.socket operation on non-socket.

Hello there,

Error pop-up message when I launch XenApp 6.5 Published app - cannot connect to XenApp Server.socket operation on non-socket. The Published app does not launch.

How to get rid of this message and get published app launch.

Thanks and Regards
goprasadAsked:
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Sekar ChinnakannuStaff EngineerCommented:
try to disable session reliability and check, Also check in web interface and make sure no changes made on the same.
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Dirk KotteSECommented:
what changes do you made?
Seen similar with missing STA settings at the NS-Gateway.
(settings are lost after license was expired)
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goprasadAuthor Commented:
No changes, just accessing it externally from Citrix Web Access,
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Dirk KotteSECommented:
Citrix Web Access = Webinterface/Storefront only
... or WI/SF with Citrixsecuregateway (CSG) or Netscaler Gateway or AccessGateway or VPN

do you use "Citrix Web Access" for internal and external access?
if yes how do you configure the external sites?

do you use external access before without problems?
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goprasadAuthor Commented:
Internal access no issue, external access via NS AGEE. FW rule change to allow traffic from NS to Citrix servers on port 1494 and 2598 allowed.
And in XA 6.5 there is no session reliability enabled.
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Dirk KotteSECommented:
do you use webinterface or storefront?
with webinterface. do you create a site for gateway-access?

use "netstat -n 5" at the client while trying to build the connection.
check for sessions with "syn_send"
which port use these sessions?
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Dirk KotteSECommented:
hi, some news?
do you need some additional help?
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