Veeam, in their infinite wisdom, release new server or workstation versions with every major release. Veeam B&R v11 (Biggest Release Ever!) is no different. However there is a massive gotcha, if you use a Service Provider for off premise Cloud
Fortigate SSLVPN with Azure MFA
TLDR; The short version is follow the Fortinet Guide and Microsoft Guide to the letter. The rest of this post steps through the guide and highlights some of the things that may go wrong, what the error messages are and