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change the XML port on you Presentation Server to another port like 8080 or something other than 80.<br />
Also check <a href="http://support.citrix.com/article/CTX113672" rel="ugc">http://support.citrix.com/article/CTX113672</a>
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change the XML port on you Presentation Server to another port like 8080 or something other than 80.
Also check http://support.citrix.com/article/CTX113672 [http://support.citrix.com/article/CTX113672]

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I was able to fix the issue. &nbsp;We are just looking for proof of concept, so we tried using a temporary self-signed certificate. &nbsp;I went ahead and purchased a ssl certificate from a CA, installed it, and now it works great.
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I was able to fix the issue.  We are just looking for proof of concept, so we tried using a temporary self-signed certificate.  I went ahead and purchased a ssl certificate from a CA, installed it, and now it works great.

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I have Citrix Xenapp Fundamentals 6 on a Windows Server 2008 R2 server. &nbsp;I have setup the internal and external access successfully and can access it from any web browser.<br />
<br />
The issue I am having is with our thin clients. &nbsp;We are using HP t5740 tc's with Win 7 Embedded Std on them. &nbsp;Whenever I use the Citrix online plugin, enter <a href="https://servername" rel="ugc">https://servername</a>, and click update I receive the following error:<br />
<br />
&quot;The server has an invalid root certificate, so this may be a malicious server. &nbsp;Connection dropped.&quot;<br />
<br />
Any suggestions?
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I have Citrix Xenapp Fundamentals 6 on a Windows Server 2008 R2 server.  I have setup the internal and external access successfully and can access it from any web browser.

The issue I am having is with our thin clients.  We are using HP t5740 tc's with Win 7 Embedded Std on them.  Whenever I use the Citrix online plugin, enter https://servername, and click update I receive the following error:

"The server has an invalid root certificate, so this may be a malicious server.  Connection dropped."

Any suggestions?

Thin Clients Cannot Connect to Citrix Xenapp Server

Citrix is the synonym for the virtualization and application infrastructure systems developed by the company of the same name. Main areas are application virtualization, Software-As-A-Service (SaaS), cloud-computing and networking. The two most well-known are Citrix XenApp or Citrix CloudPlatform.