Access Denied XenApp 6.5 Windows 2008R2

Access Denied XenApp 6.5 Windows 2008R2

Access is Denied XenApp 6.5 Windows 2008R2 when launching XenApp Published Apps.

This error has been posted several times already by other people, but I wasn’t able to quickly find the resolution when I searched for it.

Opening a XenApp published application resulted in an error, “Access is Denied”.


Same issue occurred when launching a published Desktop. “Access is denied”.


Here’s how to fix the Access is denied error.

Open RUN and type in Regedit. Click OK.

Run Cmd RegeditNavigate to

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\

Right click on Terminal Server, select new DWORD (32-bit) value.

Regedit Add Dword

Rename the Registry DWORD New Value #1 to IgnoreRegUserConfigErrors

RegEdit Term Server

Change the value of IgnoreRegUserConfigErrors from 0 to 1. Click OK.


RegEdit Ignore

Restart the Virtual machine and test launching a published application.

Additionally, you can chance the Kerberos MaxTokenSize and this should fix the issue also.

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.


Name: MaxTokenSize
Value: 48000 (Decimal)

Note: After modifying the registry, restart the server.

MaxTokenSize registry entry to multiple computers-

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