I installed SLES 15 using my email and a registration code, which appears to have updated SLES as part of the install process. (This is good, right?)
After doing this, I installed the guest additions, and rebooted. The reboot hung starting vboxadd.service.
SLES 15 Install options:
- Base system
- Legacy support
- desktop Applications
- Development tools
- Default "server applications" module
- Enabled update repositories