If I understand you correctly you are updating RadDock content automatically using Timer control and if simultaneous request occur the first one is aborted.
If this is the case, this problem is not related to RadDock or Timer control but to the ASP.NET framework in general - it is not possible to trigger simultaneous AJAX requests. You can avoid this issue utilizing RadAjaxManager
and setting its RequestQueueSize
If this is not the case, could you please describe in more details the exact scenario - a sample fully runnable page demonstrating the problem will be of great help solving the issue.
the Telerik team
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