https://community.qlik.com/t5/Connectivity-Data-Prep/Reload-Task-failed-after-upgrade/m-p/1625895#M4398 <P>HI,</P><P>So yesterday i upgraded Qlik Sense Server to june 2019 version. After that, i tried to reload an application but it directy fails. The error was the application was unable to read the data source.&nbsp;</P><P>So, if you have a multi node deployement, the solution for that is :&nbsp;</P><P>Go to Schedulers in " Configure System" then make the central node "Slave" (in Advanced, Type) and the Frontnode "Master".&nbsp; Apparently, by default, when you're upgrading Qlik Sense Server, thoses types changes.</P><P>Have a nice day !&nbsp;</P> Tue, 28 Dec 2021 19:45:07 GMT radhouane_skander 2021-12-28T19:45:07Z https://community.qlik.com/t5/Connectivity-Data-Prep/Reload-Task-failed-after-upgrade/m-p/1625895#M4398 <P>HI,</P><P>So yesterday i upgraded Qlik Sense Server to june 2019 version. After that, i tried to reload an application but it directy fails. The error was the application was unable to read the data source.&nbsp;</P><P>So, if you have a multi node deployement, the solution for that is :&nbsp;</P><P>Go to Schedulers in " Configure System" then make the central node "Slave" (in Advanced, Type) and the Frontnode "Master".&nbsp; Apparently, by default, when you're upgrading Qlik Sense Server, thoses types changes.</P><P>Have a nice day !&nbsp;</P> Tue, 28 Dec 2021 19:45:07 GMT https://community.qlik.com/t5/Connectivity-Data-Prep/Reload-Task-failed-after-upgrade/m-p/1625895#M4398 radhouane_skander 2021-12-28T19:45:07Z