diff --git a/data/auth.sqlite b/data/auth.sqlite
index 14be0cc..fbe2b35 100644
Binary files a/data/auth.sqlite and b/data/auth.sqlite differ
diff --git a/src/page.html b/src/page.html
index cbe0d33..e331098 100644
--- a/src/page.html
+++ b/src/page.html
@@ -749,7 +749,8 @@ function showDetail(fuuid){
         }else h+="<div style=color:#64748b>—</div>";
         h+="<h3>🔍 Probe Data <span id=mb-probe-status style=font-size:11px;color:#64748b>loading...</span></h3><div id=mb-probe-data style=color:#64748b>Loading...</div>";
         h+="<h3>🖼️ Preview <span style=font-size:12px;color:#94a3b8>"+label+"</span> <span id=mb-preview-res style=font-size:12px;color:#64748b></span></h3><div style=margin-top:8px;position:relative;display:flex;align-items:center;gap:8px>";
-        var src="/api/v2/files/"+fuuid+"/stream";
+        var userId=localStorage.getItem("tree_user")||"demo";
+        var src="/api/v2/files/"+userId+"/"+fuuid+"/stream";
         var ext=(label||"").split(".").pop().toLowerCase();
         var isVideo=(ext=="mp4"||ext=="mov"||ext=="avi"||ext=="webm"||ext=="mkv");
         var isTxt=(ext=="txt"||ext=="log"||ext=="csv"||ext=="json"||ext=="xml");
@@ -785,7 +786,7 @@ function showDetail(fuuid){
                 var nodes=el.querySelectorAll(".mermaid");if(nodes.length)mermaid.run({nodes:Array.from(nodes)})
             },100)}
         });
-        fetch("/api/v2/files/"+fuuid+"/probe").then(function(r){return r.json()}).then(function(p){
+        fetch("/api/v2/files/"+userId+"/"+fuuid+"/probe").then(function(r){return r.json()}).then(function(p){
             var pd=document.getElementById("mb-probe-data");
             var ps=document.getElementById("mb-probe-status");
             var pr=document.getElementById("mb-preview-res");
@@ -1020,7 +1021,8 @@ function quickPreview(fuuid){
     var isDocText=(ext=="docx"||ext=="doc"||ext=="rtf");
     var isDocImg=(ext=="pages"||ext=="key"||ext=="numbers");
     var isDocPdf=(ext=="pdf"||ext=="pptx"||ext=="xlsx"||ext=="odt"||ext=="xls"||ext=="ppt"||ext=="epub"||ext=="html");
-    var src="/api/v2/files/"+fuuid+"/stream";
+    var userId=localStorage.getItem("tree_user")||"demo";
+        var src="/api/v2/files/"+userId+"/"+fuuid+"/stream";
 
     var o=document.createElement("div");
     o.style.cssText="position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.8);z-index:10002;display:flex;align-items:center;justify-content:center";
diff --git a/src/server.rs b/src/server.rs
index 0ce9cc4..aa62281 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -1186,7 +1186,9 @@ async fn stream_file(
     }
 }
 
-async fn get_file_probe(Path(file_uuid): Path<String>) -> impl IntoResponse {
+async fn get_file_probe(
+    Path((user_id, file_uuid)): Path<(String, String)>,
+) -> impl IntoResponse {
     let result = tokio::task::spawn_blocking(move || -> anyhow::Result<serde_json::Value> {
         let conn = FileTree::open_user_db("demo")?;
         let node: Option<(Option<String>, Option<String>)> = conn