Task.RunSynchronously Method (TaskScheduler)
Assembly: mscorlib (in mscorlib.dll)
The Task instance has been disposed.
The scheduler parameter is a null reference (Nothing in Visual Basic).
The Task is not in a valid state to be started. It may have already been started, executed, or canceled, or it may have been created in a manner that doesn't support direct scheduling.
A task may only be started and run only once. Any attempts to schedule a task a second time will result in an exception.
If the target scheduler does not support running this task on the current thread, the task will be scheduled for execution on the scheduler, and the current thread will block until the task has completed execution.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.