diff --git a/clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts b/clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts
--- a/clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts
+++ b/clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts
@@ -91,6 +91,26 @@
 
   const clangdClient = new vscodelc.LanguageClient(
       'Clang Language Server', serverOptions, clientOptions);
+
+  // We override the default implementation for failed requests. The default
+  // behavior is just to log failures in the output panel, however output panel
+  // is designed for extension debugging purpose, normal users will not open it,
+  // thus when the failure occurs, normal users doesn't know that.
+  //
+  // For user-interactive operations (e.g. applyFixIt, applyTweaks), we will prompt
+  // up the failure to users.
+  clangdClient.logFailedRequest =
+      (rpcReply: vscodelc.RPCMessageType, error: any) => {
+        if (error instanceof vscodelc.ResponseError &&
+            rpcReply.method === "workspace/executeCommand")
+          vscode.window.showErrorMessage(error.message);
+
+        // Keep the default behavior.
+        if (error instanceof vscodelc.ResponseError &&
+            error.code === vscodelc.ErrorCodes.RequestCancelled)
+          return;
+        clangdClient.error(`Request ${rpcReply.method} failed.`, error);
+      };
   console.log('Clang Language Server is now active!');
   context.subscriptions.push(clangdClient.start());
   context.subscriptions.push(vscode.commands.registerCommand(