Im having issue where suddenly all reloading jobs was not working. After checking in QMC, I found out that Qlikview Distribution Services was not stop.
The resolution that I do is start the services back and it works normal.
From event viewer logs I found error as below:
Application: QVDistributionService.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.