WARNING: Virtualmin is not ready for Ubuntu Server 16.04 LTS
I set up in Virtual Machine (VMware 12) this combination Ubuntu Server x64 16.04 LTS and latest Virtualmin. Steps I've done:
1) Installed the operating system from scratch, giving only SSH feature at the end 2) I installed Virtualmin using its installation script 3) I did Post-installation Wizard as usual then checked if configuration is ready for and it was 4) I created a Virtual Server then a file in its root called phpinfo.php
Accessing the file in browser is not running PHP at all, you get Save As page for saving your script.
Virtualmin is installing from Ubuntu repository these packages:
Server version: Apache/2.4.18 (Ubuntu) Server built: 2016-04-15T18:00:57
PHP 7.0.4-7ubuntu2.1 (cli) ( NTS ) Copyright (c) 1997-2016 The PHP Group Zend Engine v3.0.0, Copyright (c) 1998-2016 Zend Technologies with Zend OPcache v7.0.6-dev, Copyright (c) 1999-2016, by Zend Technologies
mysql Ver 14.14 Distrib 5.7.12, for Linux (x86_64) using EditLine wrapper
Before reporting this I installed as a basic user this combination for 4 TIMES to be sure there are issues with PHP7. If you enable the default site 000-default.conf and place a phpinfo.php into its root PHP7 is working.
Please warn asap your users not installing this combination until there is a fix for it.