While running the initial install of SRM exe I'm receiving the following error message: Has anyone encountered this error and if so, how did you resolve?
I see that you are using firstname.lastname@example.org to authenticate against vCenter. Are you 100% sure that this user has admin rights at the vCenter level (not just the SSO server)?
Could you download the below installer from VMware portal and verify if you encounter same issue. SRM 126.96.36.199