diff --git a/data/auth.sqlite b/data/auth.sqlite
index 6797d40..09e7041 100644
Binary files a/data/auth.sqlite and b/data/auth.sqlite differ
diff --git a/markbase-core/src/server.rs b/markbase-core/src/server.rs
index af9cb15..fd948bf 100644
--- a/markbase-core/src/server.rs
+++ b/markbase-core/src/server.rs
@@ -4,9 +4,11 @@ use axum::{
     extract::{Path, Query, State},
     http::{HeaderMap, StatusCode},
     response::{Html, IntoResponse, Json},
-    routing::{delete, get, patch, post, put},
+    routing::{any, delete, get, patch, post, put},
+    Extension,
     Router,
 };
+use dav_server::{fakels::FakeLs, DavHandler};
 use serde::Deserialize;
 use std::str::FromStr;
 use std::sync::{Arc, Mutex};
@@ -132,6 +134,26 @@ pub async fn run(port: u16, file: Option<String>) -> anyhow::Result<()> {
         }
     });
 
+    // WebDAV handler creation (Phase 20)
+    let webdav_user = "demo";
+    let webdav_home = std::path::PathBuf::from("/Users/accusys/momentry/var/sftpgo/data").join(webdav_user);
+    
+    let webdav_vfs = Box::new(crate::vfs::local_fs::LocalFs::new());
+    let webdav_fs = crate::webdav::VfsDavFs::new(
+        webdav_vfs,
+        webdav_home,
+        None, // upload_hook
+        webdav_user.to_string(),
+    );
+    
+    let webdav_handler = DavHandler::builder()
+        .filesystem(webdav_fs)
+        .locksystem(FakeLs::new())
+        .strip_prefix("/webdav")
+        .build_handler();
+    
+    log::info!("WebDAV handler created for user: {}", webdav_user);
+
     let app = Router::new()
         .route("/", get(root_handler))
         .route("/display", post(display_handler))
@@ -234,6 +256,11 @@ pub async fn run(port: u16, file: Option<String>) -> anyhow::Result<()> {
         .route("/files", get(|| async { Html(include_str!("file_list.html")) }))
         .route("/products", get(|| async { Html(include_str!("product_manager.html")) }))
         .route("/downloads", get(|| async { Html(include_str!("category_view.html")) }))
+        // WebDAV API endpoints (Phase 20)
+        .route("/webdav", any(handle_webdav))
+        .route("/webdav/", any(handle_webdav))
+        .route("/webdav/*path", any(handle_webdav))
+        .layer(Extension(webdav_handler))
         .layer(DefaultBodyLimit::disable())
         .with_state(state);
 
@@ -2418,3 +2445,11 @@ async fn search_files_handler(Query(query): Query<SearchQuery>) -> impl IntoResp
             .into_response(),
     }
 }
+
+// WebDAV handler (Phase 20)
+async fn handle_webdav(
+    Extension(dav): Extension<DavHandler>,
+    req: axum::extract::Request,
+) -> impl IntoResponse {
+    dav.handle(req).await
+}