Getting "Access is Denied" error while trying to login to Xenapp6 Server

     Getting "Access is Denied" error while trying to login to Xenapp6 Server

The user cannot authenticate because the Kerberos token that is generated during authentication attempts has a fixed maximum size and it’s exceeded the maximum value. To get rid of this issue increase the Kerboros MaxToken Size in the XenApp6 Server.

To increase the Kerberos token value we have to modify Registry.

Here are the steps to do that:

 1.    Take the back-up of the registry setting before any modification

2.    Go to the registry path System\CurrentControlSet\Control\Lsa\Kerberos\Parameters

3.    If this key "MaxTokenSize " is not present, create the key

4.    Right-click Parameters, point to New, and then click DWORD (32-bit) Value.

5.    Name the registry entry "MaxTokenSize".

6.    Right-click "MaxTokenSize", and then click Modify.

7.    Under Base, click Decimal.

8.    Type 65535, and then click OK

  

You will now be able to login to your XenApp Applications.