<div>
Check the following:<br />
<br />
Launch Citrix AppCenter<br />
<br />
Navigate to Policies --&gt; Computer Policies --&gt; Unfiltered<br />
<br />
Select Settings --&gt; All Settings.<br />
<br />
Search for XML<br />
<br />
Enable the Trust XML requests
</div>


Check the following:

Launch Citrix AppCenter

Navigate to Policies --> Computer Policies --> Unfiltered

Select Settings --> All Settings.

Search for XML

Enable the Trust XML requests

<div>
That's the XA65 instructions. I am looking for those to XA5.
</div>


That's the XA65 instructions. I am looking for those to XA5.

<div>
Thanks Sekar, pretty sure that's what I am looking for.
</div>


Thanks Sekar, pretty sure that's what I am looking for.

<div>
servers listed on the webinterface have the XML service installed and running right, also check the port too.<br />
It can be done via console check <a href="http://support.citrix.com/article/CTX121839" rel="ugc">http://support.citrix.com/article/CTX121839</a>
</div>


servers listed on the webinterface have the XML service installed and running right, also check the port too.
It can be done via console check http://support.citrix.com/article/CTX121839 [http://support.citrix.com/article/CTX121839]

<div>
Apologies...I plain didn't notice the XA 5 reference! My mistake!
</div>


Apologies...I plain didn't notice the XA 5 reference! My mistake!

<div>
<div class="content wysiwyg-content">
I have recently deployed Storefront 2.6 (replacing WI 5.2). <br />
I am getting a stack of events on the Storefront referring to XML errors:<br />
<br />
The Citrix servers do not trust the server. This message was reported from the XML Service at address <a href="http://OurXA5Host/scripts/wpnbr.dll" rel="ugc">http://OurXA5Host/scripts/wpnbr.dll</a>&nbsp;[NFuseProtocol.TRequestRec<wbr />onnectSess<wbr />ionData]. <br />
<br />
We also have a XenApp 6.5 farm. I was able to get around this by enabling the &quot;Trust XML Requests&quot; Citrix Computer Policy. <br />
I have no idea to set this on the XA5 farm though. Any help would be greatly appreciated.
</div>
</div>


I have recently deployed Storefront 2.6 (replacing WI 5.2). 
I am getting a stack of events on the Storefront referring to XML errors:

The Citrix servers do not trust the server. This message was reported from the XML Service at address http://OurXA5Host/scripts/wpnbr.dll [NFuseProtocol.TRequestReconnectSessionData]. 

We also have a XenApp 6.5 farm. I was able to get around this by enabling the "Trust XML Requests" Citrix Computer Policy. 
I have no idea to set this on the XA5 farm though. Any help would be greatly appreciated.

How do I enable &quot;Trust XML Service&quot; on XenApp 5?

Extensible Markup Language (XML) refers to the encoding of documents such that they can be read by both machines and humans. XML documents use tags to show the beginning and end of a set of data. XML is used extensively on websites to show volumes of data, and is the default for a number of office productivity suites. This topic includes discussions of XML-related technologies, such as XQuery (the XML Query language), XPath (the XML Path language), XSLT (eXtensible Stylesheet Language Transformations), XLink (the XML Linking language) and XPointer (the XML Pointer language).

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.

Citrix

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).

How do I enable &quot;Trust XML Service&quot; on XenApp 5?

How do I enable "Trust XML Service" on XenApp 5?