I was unable to duplicate your error on either Win10 systems I have. I have made some changes to limit the repetitive runs after the logon trigger and explicitly set the MultipleInstancesPolicy:
<?xmlversion="1.0"encoding="UTF-16"?><Taskversion="1.2"xmlns="http://schemas.microsoft.com/windows/2004/02/mit/task"><RegistrationInfo><Date>2016-06-02T16:32:22.334-08:00</Date><Description>Test</Description><URI>\TestTask</URI></RegistrationInfo><Triggers><CalendarTrigger><Repetition><Interval>PT15M</Interval><StopAtDurationEnd>false</StopAtDurationEnd></Repetition><StartBoundary>2016-06-02T17:32:22-07:00</StartBoundary><Enabled>true</Enabled><ScheduleByDay><DaysInterval>1</DaysInterval></ScheduleByDay></CalendarTrigger><LogonTrigger><Enabled>true</Enabled><Delay>PT1M</Delay></LogonTrigger></Triggers><Principals><Principalid="Author"><UserId>S-1-5-21-839522115-1383384898-515967899-301783</UserId><LogonType>InteractiveToken</LogonType><RunLevel>HighestAvailable</RunLevel></Principal></Principals><Settings><MultipleInstancesPolicy>Parallel</MultipleInstancesPolicy><DisallowStartIfOnBatteries>false</DisallowStartIfOnBatteries><StopIfGoingOnBatteries>false</StopIfGoingOnBatteries><AllowHardTerminate>true</AllowHardTerminate><StartWhenAvailable>true</StartWhenAvailable><RunOnlyIfNetworkAvailable>false</RunOnlyIfNetworkAvailable><IdleSettings><StopOnIdleEnd>true</StopOnIdleEnd><RestartOnIdle>false</RestartOnIdle></IdleSettings><AllowStartOnDemand>true</AllowStartOnDemand><Enabled>true</Enabled><Hidden>false</Hidden><RunOnlyIfIdle>false</RunOnlyIfIdle><WakeToRun>false</WakeToRun><ExecutionTimeLimit>PT0S</ExecutionTimeLimit><Priority>7</Priority></Settings><ActionsContext="Author"><Exec><Command>C:\Users\user\Downloads\TestTask.exe</Command></Exec></Actions></Task>