diff --git a/libs/clipboard/src/platform/fuse.rs b/libs/clipboard/src/platform/fuse.rs
index 3f0215bc7..06f3a1381 100644
--- a/libs/clipboard/src/platform/fuse.rs
+++ b/libs/clipboard/src/platform/fuse.rs
@@ -41,6 +41,7 @@ use utf16string::WStr;
 
 use crate::{ClipboardFile, CliprdrError};
 
+#[cfg(target_os = "linux")]
 use super::LDAP_EPOCH_DELTA;
 
 /// block size for fuse, align to our asynchronic request size over FileContentsRequest.
diff --git a/libs/clipboard/src/platform/mod.rs b/libs/clipboard/src/platform/mod.rs
index 14f686772..f63df87a3 100644
--- a/libs/clipboard/src/platform/mod.rs
+++ b/libs/clipboard/src/platform/mod.rs
@@ -8,7 +8,10 @@ pub fn create_cliprdr_context(
     enable_others: bool,
     response_wait_timeout_secs: u32,
 ) -> crate::ResultType<Box<dyn crate::CliprdrServiceContext>> {
-    windows::create_cliprdr_context(enable_files, enable_others, response_wait_timeout_secs)
+    let boxed =
+        windows::create_cliprdr_context(enable_files, enable_others, response_wait_timeout_secs)?
+            as Box<_>;
+    Ok(boxed)
 }
 
 #[cfg(any(target_os = "linux", target_os = "macos"))]
@@ -63,4 +66,5 @@ impl CliprdrServiceContext for DummyCliprdrContext {
 
 // begin of epoch used by microsoft
 // 1601-01-01 00:00:00 + LDAP_EPOCH_DELTA*(100 ns) = 1970-01-01 00:00:00
+#[cfg(target_os = "linux")]
 const LDAP_EPOCH_DELTA: u64 = 116444772610000000;
diff --git a/libs/clipboard/src/platform/windows.rs b/libs/clipboard/src/platform/windows.rs
index 1df5e09a0..1576b4a78 100644
--- a/libs/clipboard/src/platform/windows.rs
+++ b/libs/clipboard/src/platform/windows.rs
@@ -5,11 +5,15 @@
 #![allow(non_snake_case)]
 #![allow(deref_nullptr)]
 
-use std::{boxed::Box, result::Result};
+use std::{
+    boxed::Box,
+    ffi::{CStr, CString},
+    result::Result,
+};
 
 use crate::{
-    allow_err, log, send_data, CStr, CString, ClipboardFile, CliprdrError, CliprdrServiceContext,
-    ResultType, ERR_CODE_INVALID_PARAMETER, ERR_CODE_SERVER_FUNCTION_NONE, VEC_MSG_CHANNEL,
+    allow_err, log, send_data, ClipboardFile, CliprdrError, CliprdrServiceContext, ResultType,
+    ERR_CODE_INVALID_PARAMETER, ERR_CODE_SERVER_FUNCTION_NONE, VEC_MSG_CHANNEL,
 };
 
 // only used error code will be recorded here
@@ -590,8 +594,8 @@ impl CliprdrServiceContext for CliprdrClientContext {
         Ok(())
     }
 
-    fn empty_clipboard(&mut self, conn_id: i32) -> bool {
-        empty_clipboard(self, conn_id)
+    fn empty_clipboard(&mut self, conn_id: i32) -> Result<bool, CliprdrError> {
+        Ok(empty_clipboard(self, conn_id))
     }
 
     fn server_clip_file(&mut self, conn_id: i32, msg: ClipboardFile) -> Result<(), CliprdrError> {
@@ -611,7 +615,7 @@ fn ret_to_result(ret: u32) -> Result<(), CliprdrError> {
     }
 }
 pub fn empty_clipboard(context: &mut CliprdrClientContext, conn_id: i32) -> bool {
-    unsafe { TRUE == cliprdr::empty_cliprdr(context, conn_id as u32) }
+    unsafe { TRUE == empty_cliprdr(context, conn_id as u32) }
 }
 
 pub fn server_clip_file(