postinstall.bat tries to create NTFS soft-links using the bundled bin/mkslink. exe .
However, this needs the Administrator account, or at least SeCreateSymbolicLinkPrivilege.
When this privilege is not satisfied, it fails silently, the link is not created, and EWS does not work - e.g.
c:\Program Files\Red Hat\Enterprise Web Server\bin>httpd
httpd: Syntax error on line 124 of C:/Program Files/Red Hat/Enterprise Web Server/etc/httpd/conf/httpd.conf: Cannot load c:/Program Files/Red Hat/Enterprise Web
Server/etc/httpd/modules/mod_auth_basic.so into server: The specified module could not be found.
So I think that the post-install script should check for admin privileges, to prevent such problems.
Stating the Admin rights requirement in the readme is imho insufficient.
Or at least, either mkslink.exe should fail, or the script should check whether the links were really created.