To troubleshoot a reload failure it is useful to analyse document logs.
1- Open the QlikView document (.qvw file) in QlikView Desktop.
2- Select Document Properties under Settings
3- Select General Tab
4- Tick ‘Generate Logfile’ and then click ‘OK’
Reload the document and once reload completed, this would create a log file (DocumentLog.txt) under C:\ProgramData\QlikTech\DistributionService\1\Log\YYYYMMDD\*task start time* - *TaskName*