SEE: http://www.mkyong.com/apache/how-to-enable-webdav-in-apache-server-2-2-x-windows/

While installing “ownCloud” web services, the post installation checklist noted that WebDAV services did not appear to be enabled, check configuration instructions.  Consequently, the installation would not conclude.

I googled and found the above article and proceeded to enable each LoadModule and the Include for httpd-dav.conf file as shown in Step 1. Load WebDav in Apache Server, and Step 4. Restart the Apache Service.   It was unnecessary to perform  steps 2, 3, and 5 shown in the article.

STEP 1. Load WebDav In Apache Server. WebDAV comes with Apache server 2.x, you just need to enable it. Edit “%APACHE_PATH%/conf/http.conf“, un-comment the following load and include statements by removing the leading # hashtags.  Use Notepad++ to edit the file: http.conf

LoadModule alias_module modules/mod_alias.so
LoadModule auth_digest_module modules/mod_auth_digest.so
LoadModule authn_file_module modules/mod_authn_file.so
LoadModule dav_module modules/mod_dav.so
LoadModule dav_fs_module modules/mod_dav_fs.so
LoadModule dav_lock_module modules/mod_dav_lock.so
LoadModule setenvif_module modules/mod_setenvif.so

# Distributed authoring and versioning (WebDAV)
Include conf/extra/httpd-dav.conf