VDA upgrade service fails when upgrading CU version

VDA does not upgrade when upgrading to next CU version. In Studio the upgrade starts, goes into In-Progress and moves to completed however, the installed version does not change. After a minute or two, the status moves back to upgrade available...

Receiver Crash: A Fatal Error Cccurred. Would You Like to Restart Citrix Receiver?

This article is intended for Citrix administrators and technical teams only.Non-admin users must contact their company’s Help Desk/IT support team and can refer toCTX297149for more information Receiver gives a fatal error intermittently to all users. Trying to uninstall/install Receiver produces...