diff --git a/.htaccess b/.htaccess
index b1d25f2436..0e66de6d60 100644
--- a/.htaccess
+++ b/.htaccess
@@ -26,3 +26,8 @@ php_value session.gc_probability 1
 php_value session.gc_divisor 10
 # multibyte extension: needed for utf-8
 php_value mbstring.func_overload 7
+#
+#For Apache FCGI (not regular mod_php!) you need the following rewrite rule:
+#RewriteEngine on
+#RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]
+#Otherwise authentication request will be send over and over again, as password is NOT available to PHP!
diff --git a/groupdav.php b/groupdav.php
index fb76f619c8..7332f046e9 100644
--- a/groupdav.php
+++ b/groupdav.php
@@ -2,6 +2,13 @@
 /**
  * EGroupware - CalDAV/CardDAV/GroupDAV server
  *
+ * For Apache FCGI you need the following rewrite rule:
+ *
+ * 	RewriteEngine on
+ * 	RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]
+ *
+ * Otherwise authentication request will be send over and over again, as password is NOT available to PHP!
+ *
  * Using the PEAR HTTP/WebDAV/Server class (which need to be installed!)
  *
  * @link http://www.egroupware.org
diff --git a/phpgwapi/inc/class.egw_digest_auth.inc.php b/phpgwapi/inc/class.egw_digest_auth.inc.php
index 017bd39178..6b961350b2 100644
--- a/phpgwapi/inc/class.egw_digest_auth.inc.php
+++ b/phpgwapi/inc/class.egw_digest_auth.inc.php
@@ -2,6 +2,13 @@
 /**
  * eGroupWare API: Basic and Digest Auth
  *
+ * For Apache FCGI you need the following rewrite rule:
+ *
+ * 	RewriteEngine on
+ * 	RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]
+ *
+ * Otherwise authentication request will be send over and over again, as password is NOT available to PHP!
+ *
  * @link http://www.egroupware.org
  * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
  * @package api
diff --git a/webdav.php b/webdav.php
index 7e67f50d55..64d8549fb2 100644
--- a/webdav.php
+++ b/webdav.php
@@ -2,6 +2,13 @@
 /**
  * FileManger - WebDAV access
  *
+ * For Apache FCGI you need the following rewrite rule:
+ *
+ * 	RewriteEngine on
+ * 	RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L]
+ *
+ * Otherwise authentication request will be send over and over again, as password is NOT available to PHP!
+ *
  * Using the PEAR HTTP/WebDAV/Server class (which need to be installed!)
  *
  * @link http://www.egroupware.org