Users unable to relaunch the published applications, error “Citrix workspace will try to reconnect…”

Keep Alive policy settings:

https://docs.citrix.com/en-us/xenapp-and-xendesktop/7-15-ltsr/policies/reference/ica-policy-settings/keep-alive-policy-settings.html

Session reliability policy settings:

https://docs.citrix.com/en-us/xenapp-and-xendesktop/7-15-ltsr/policies/reference/ica-policy-settings/session-reliability-policy-settings.html

Session reliability on Citrix ADC high availability pair:

https://docs.citrix.com/en-us/citrix-adc/current-release/ns-ag-appflow-intro-wrapper-con/session-reliablility-on-citrix-adc-ha-pair.html