当输入正确的用户名和密码是总是出现无法登陆的情况，匿名情况下额出现这种提示，问题界面截图图下图所示：

事件监视器里面有2条error,分别是：

1.All of the configured XML Services for farm "Farm1" failed to respond to this XML transaction. [Log ID: df5c5a27]

2.The servers sent HTTP headers indicating that an error occurred: "401" "Unauthorized".  This message was reported from the XML Service at address "http://EMASS:80/scripts/wpnbr.dll [com.citrix.xml.NFuseProtocol.RequestCapabilities]".  This XML Service could not be contacted and will be temporarily removed from the list of active services. [Log ID: 1e7d3bc5]

解决方法：

1.        Ctxxmlss /u

2.        Ctxxmlss /r8080(以上2步在cmd里面执行)

3.        确认xml的端口更改为8080(AMC->Servers->EMASS->属性)

4.        发布站点的xml service 端口更改为8080

5.        服务里面手动启动Citrix Xml Service，确保服务正常启动

补充：

安装XenApp的时候建议使用8080端口，而不是与TCP/IP共享端口。

当citrix的客户端通过浏览器访问网站时出现错误：he Citrix server is unable to process your request to start this published application at this time. Please try again later. If the problem persists, contact your administrator.

问题出现原因：

A possible cause for this issue is that the third party software installation utilizes an executable file named cmstart.exe and modified the environment variables to point to that executable. Because XenApp uses an executable named cmstart.exe for the launch of publish applications it might get confused and locate the cmstart.exe of the third party software instead. Of course by using the wrong version of cmstart.exe the launch process breaks.

One common reason why XenApp located the wrong cmstart.exe is because the third party software might have modified the environment path variables to point to its cmstart.exe. XenApp does the same to locate cmstart.exe for publish application launch process. So the variables provided by the third party software get the priority.

解决方案：

An easy to change resolution is to move the variable of the location of the third party software after the XenApp variables. After the change XenApp should locate the correct version of cmstart.exe

“%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Citrix\system32\;C:\Program Files (x86)\Citrix\System32\Citrix\IMA;C:\Program Files (x86)\Citrix\System32\Citrix\IMA\Subsystems;%SystemRoot%\System32\Citrix\IMA;C:\Program Files (x86)\Citrix\system32;C:\Program Files (x86)\Common Files\Citrix\System32\;C:\Program Files (x86)\ThirdParty\Bin\;C:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;”