Installing self-hosted confluence server (6.8.1) with installer (as a service, no any manual editing of any files) on a fresh Windows OS leads to error "BootstrapException: Unable to bootstrap application: Couldn't save confluence.cfg.xml to C:\Program Files\Atlassian\Application Data\Confluence directory" after rebooting.
Same Confluence version (installed on fresh OS, as a service) for MacOSX and Ubuntu 16.4 desktop & server version also doesn't work after rebooting ...