It is straight forward for a self-signed certificate so Noting to add. BUT, as you certainly know, many brothers do not accept self-signed certificate. So please add this information to add a SHA2 certificate with a publicly authorized CA:
--- Go Detail, COPY Thumbprint and PASTE it to a DOS/PowerShell command SHELL, DO NOT USE Notepad nor PS-ISE (You can use any other method who can remove "illegal characters" in the thumbprint copied from the GUI)
--- Remove Spaces and redo a COPY
Then PASTE in the Windows Admin Center installer when asking for certificate thumbprint.
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For those who would rather use PowerShell, just do
$pfxpassword = Read-Host -AsSecureString
$cert = Import-PfxCertificate \\path\to\cert.pfx -Password $pfxpassword -CertStoreLocation Cert:\LocalMachine\my
$cert.Thumbprint | Set-clipboard
Then the certificate thumbprint is in your clipboard for when you use the installer
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For those who would rather use PowerShell, just do
Then the certificate thumbprint is in your clipboard for when you use the installer