A user has set Urban Turtle Cards per page option to View all cards and an error message similar to this one is displayed:
TF26174: Team Foundation timed out trying to connect to the server. Check that you have a network connection and that the Team Foundation Server is available. If the problem persists, contact your Team Foundation Server administrator.
In the planning board, there is a menu that allows to set the number of cards displayed on each page. Urban Turtle can sometime have difficulties displaying all the work items in a card stack for large backlogs.
The usual solution to solve this issue is to open Toolbar >> Card per page and set it to display 25, 50 or 100 cards per stack. However, if the timing error prevents the user from accessing the planning board, a more drastic solution needs to be applied.
Open [TFS_INSTALL_DIR]\Application Tier\Web Access\Web\Urban Turtle\configuration where all the per user settings are stored. For a user named user_name, there is a file called user_name.settings. The file can be deleted and it will be automatically recreated with the factory default. Otherwise, it is possible to modify the file by changing the cardsPerPage value.
Replacing the 2147483647 value by 25, 50 or 100 should solve the problem. Once it's done, Internet Information Server needs to be restarted. To do so, open a console on the server with administrator privileges and run the command iisreset.
Note: If a user has access to multiple projects, the correction has to be made under the right project section of the XML file
Warning: When IIS will be restarted, every user currently connected to Urban Turtle will be disconnected.