The network connection to your application was interrupted

I am trying to access an application using the web client and once I click on the icon of the published application, I receive the following message: "The network connection to your application was interrupted. Try to access your application later or contact the technical support".

I have tried deleting the MSLicense key with no results. I have updated the NIC Drivers and still no go. It is obviously a local desktop issue since I have some PCs from which I am able to connect to the application.
I even used the same network connection for two separate PCs both running Windows XP and I was able to connect only from one of the PCs. I encountered the same issues on Windows 2003 server machines.

Citrix said that this could be a local policy issue but they did not give any other suggestion. I have checked the local policies and did not find anything unusual.

I've also disabled MacAffee and Windows Firewall.
smoga1968Asked:
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ET0000Connect With a Mentor Commented:
Check to ensure that your license server is up and working correctly. If the working machines already have licenses, they won't notice that the license server is down, but a machine that doesn't yet have a license (or had a temporary one that expired) will fail when they can't get a license.

You may want to try publishing something simple like NotePad to see if the error occurs there or is specific to your currently published application.

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ET0000Commented:
Is it only this application that is affected, or is it any application on these clients?
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smoga1968Author Commented:
Actually there is only one application published at this point.
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smoga1968Author Commented:
Thanks ET0000 this is something I will definitely look into.
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smoga1968Author Commented:
ET0000, I did a quick test by exporting the MS Licensing registry key from a PC that is able to connect to the Citrix application and import it into a PC that we could not connect from and we were able to access the application fine which proves your theory that this is a licensing related issue. Now we need to find out why some PCs are able to grab a license and others are not.
Thanks a lot
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ET0000Commented:
Glad to hear you are on your way to connectivity!

A good place to start would be license counts (and the licensing mode - by device or by user).
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smoga1968Author Commented:
My machine still doesn't grab a license after I delete the MS Licensing key. And we are using per user licensing. Any suggestions ET000?
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ET0000Commented:
I'm assuming you've checked the most obvious thing, which is whether there are any licenses available.

You should probably check the event log on the licensing server to see whether any information is being logged there when the license request comes in.

The article link below describes something that isn't the same error, but that could be because Citrix is masking the error (you could try an RDP connection from the problem machines to see if there is a more information message for that connection),
   http://www.windowsitpro.com/Article/ArticleID/25607/25607.html?Ad=1

However, unless there was a change on your license server, or these are your only XP machines, I'd think twice about fiddling with the certificates on the server, since other machines are working OK.

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smoga1968Author Commented:
Actually somebody deactivated the TS Licensing server and installed a new one but it did not install any permanent licenses. When the temporary licenses expired for some of the clients, they were not able to connect to any ICA sessions.
Thank you ET0000 for pointing me towards the right answer.
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