To get ArgoCD default admin password after installation, run:
kubectl -n argocd get secret argocd-initial-admin-secret \
-o jsonpath="{.data.password}" | base64 -d; echo
The default admin user is admin.
If the machine, for some reason, doesn't have the base64 binary you can alternatively use openssl to do the decoding.
kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" \
| openssl base64 -A -d; echo
Edit: pasted the wrong command earlier
powershell