Point all the virtual machines to internal DNS server in Azure

Join all the computers to the domain

Create account for each virtual machine and Give permission to the accounts

Point all the virtual machines to internal DNS server in Azure

Currently they’re pointing to external DNS

Restart all virtual machines for the replication to take effect

Join all the computers to the domain

Connect to all 4 virtual machines

Conenct to Domain server with domain account:

If you've saved password for machine before, you can go to control panel to delete saved credentials:

Conenct to another servers with local account first, and join domain:

Join domain for Win10:

Create account for each virtual machine

Create a new OU, mine is "SCCMLAB", and create another 3 accounts in it:

• sccmadmin (for SCCM)
• sqladmin (for SQL)
• ironman (for Win10)
  

And then add sccmadmin and sqladmin to Domain Admins group, and move my own domain administrator account "henry" to the new OU:

Save the domain account credentials in RDCMAN so that I don't need to input passwords manually when connecting: