When an administrator or help desk user attempts to sign in to Citrix Director, authentication fails and the following error message is displayed:

The system is currently unavailable. Please try again later or contact your administrator.

A CDF trace of the DirectorService module captured on the Director server does not provide any additional diagnostic information. For example:

[t:69, s:unknown]LogonUser called userName=domain\user domain = locale = en-US utcoffset = -240 
[t:69, s:unknown]Logon exception The system is currently unavailable. Please try again later or contact your administrator

The following conditions have already been verified:

• Director application settings are configured correctly, including Service.AutoDiscoveryAddresses.
• There are no network connectivity issues between the Director server and the Delivery Controllers.
• The affected user has the appropriate delegated administrator permissions.

The issue started after a Citrix environment upgrade.

During or after the Citrix upgrade, the web.config file was not updated correctly. As a result, the linkedConfiguration entry references WebService.dll.config using an incomplete or incorrect path, for example:

<linkedConfiguration href="WebService.dll.config"/>

Because Director cannot locate WebService.dll.config, the authentication process fails and users are unable to sign in.

Open the following file: C:\inetpub\wwwroot\Director\web.config in the text editor.

Search for WebService.dll.config.

Verify that the linkedConfiguration entry contains the full path to WebService.dll.config and that the path points to the correct location (default installation path shown below):

<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
 <!-- autogenerated bindings are in a different file --> 
<linkedConfiguration href="file://C:\inetpub\wwwroot\Director\Bin\WebService.dll.config"/> 
</assemblyBinding>

If the path is missing or incorrect, update it to the correct location and restart IIS.

This article describes an issue where administrators or help desk users cannot sign in to Citrix Director after an upgrade and provides troubleshooting steps to resolve the problem.