CITRIX - CDM Redirector has timed out

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Problem:

The CDM Redirector has timed out a request to Session ID #

Cause:

- This can happen when an application is attempting to access a client
   device during a disconnect.
- Printer Drivers on client's computer (ICA client was verifying and
  checking appropriate printer drivers from the client during the log on
  process, when this process is taking longer than the default time out
  value.
- During the Citrix logon process, 
  The Citrix server will send a request to the Citrix client to enumerate
  the client printers. Now at this point you may think that if you have
  "Connect to Clients default printer only" then only the default printer
  will be enumerated. WRONG! Every printer that’s on the client or is
  referenced in the profile of the user logging on, will be checked to see
  if there is a driver installed for it. So, if there are 10 printers in profile,
  all 10 printers will be checked to see if there are drivers installed.
  Now the best bit – if the drivers are not installed, the client will try to
  get the drivers from the print server. While all this is going on, the
  Citrix server is waiting for the client to send the printer information
  back so it can auto create the printers. If this takes too long, which it
  inevitably will as the client is downloading the printer drivers. A timeout
  occurs which then results in the CDM redirector errors appearing in the
  event viewer. Once the printer drivers are installed, you won’t see it
  the CDM errors anymore (that’s why it seems like it happens once)
  unless the user moves to a different PC (that doesn’t have printer
  drivers for the user’s network printers). It’s a pretty poor of way of
  designing the print process by Citrix, especially if a user may have
  several printers referenced in their profile and they then move to a
  client which doesn’t have those printer drivers installed.

   Source:
   http://forums.citrix.com/thread.jspa?messageID=1378026

Technical Bug:

Event Type: ErrorEvent
Source: CdmEvent
Category: NoneEvent
Computer: SERVER


Solution:

Check Citrix Server Administration when you see this event appear.

The best way to determine what client device is causing this issue is
to turn off client device mapping (client drive, client COM ports,
client printers).


Enable them one at a time and monitor the client's logon process

Source:
http://musumeci.blogspot.com/2007/07/ctx-event-39-cdm-redirector-has-timed.html

Possible solutions:
(1) Install the required drivers on the terminal server
(2) Force to use Universal Driver

Source:
http://forums.citrix.com/thread.jspa?messageID=1378026

Citrix’ official knowledge base article – CTX207308
suggests to increase request timeout value in registry.

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Cdm\Parameters
Increase the settings for the following:
RequestTimeout: Default is 60 (in seconds)
DirCacheTimeout Default is 30 seconds
CacheTimeout is 60 seconds

Source:
http://innitec.wordpress.com/2009/10/13/event-viewer-error-id39-the-cdm-redirector-has-timed-out-a-request-to-session-id-xx/

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