--- doc/build/ubuntu16LTS_install.frag	2017/06/12 21:04:08	1.3
+++ doc/build/ubuntu16LTS_install.frag	2018/06/20 12:36:29	1.4
@@ -147,12 +147,14 @@ sudo apt-get install loncapa-prerequisit
 </pre><p>
 This may take some minutes due to LON-CAPA's large number of dependencies.
 </p>
-<h3>Set MPM mode for Apache web server and enable use of cgi scripts</h3>
+<h3>Set MPM mode for Apache web server and enable use of cgi scripts and webDAV</h3>
 <p>Execute: </p>
 <pre>
 sudo a2dismod mpm_event
 sudo a2enmod mpm_prefork
 sudo a2enmod cgi
+sudo a2enmod dav
+sudo a2enmod dav_fs
 </pre> 
 <h3>Retrieve and execute LON-CAPA setup program</h3>
 <p>