I hope this solve your issue.
Go to "C:\Program Files\Common Files\Qlik\Custom Data". You will see folders like QvDataMarketConnector, QvOdbcConnectorPackage, QvRestConnector and QvSalesforceConnector. Inside each folder there would be a config file. Ex: C:\Program Files\Common Files\Qlik\Custom Data\QvRestConnector\QvRestConnector.exe.config.
Edit config file and add below code just before closing </configuration> tag.
Save file and do the same on Central and all RIM nodes. Make sure to stop services before making any changes.