Access Denied Error XenApp 6.5 Published Desktop

Even though - user is part of remote desktop users group and given access to the user in app center, he can able to see the published desktop icon, once logged into URL, but when he tries to launch the published desktop, he is getting "Access Denied" Error.

Soultion: Found from Citrix Forums website, Need to add reg key at the location mentioned

Access Denied in Windows Logon

Article | Connectivity | 18 found this helpful 

 | Created: 26 Mar 2014 | Modified: 22 Oct 2015

Languages

                 English                 Français                 Nederlands                                 简体中文                                Deutsch                 日本語                 Português                 Español             

Was this helpful? Yes  No

Symptoms or Error

When the application starts, access is denied in Windows logon.

---

Solution

To resolve the issue, create a new REG_DWORD at the following registry path on the server to increase the Kerberos MaxTokenSize:
Caution! Refer to the Disclaimer at the end of this article before using Registry Editor.

HKLM\System\CurrentControlSet\Control\Lsa\Kerberos\Parameters

Name: MaxTokenSize
Type: REG_DWORD
Value: 48000 (Decimal)

Note: After modifying the registry, restart the server.

Courtesy: Citrix Forums.