diff --git a/src/OpenClaw.Shared/Capabilities/DeviceCapability.cs b/src/OpenClaw.Shared/Capabilities/DeviceCapability.cs
index e975f6cd2..2c05ae9ac 100644
--- a/src/OpenClaw.Shared/Capabilities/DeviceCapability.cs
+++ b/src/OpenClaw.Shared/Capabilities/DeviceCapability.cs
@@ -149,7 +149,7 @@ private async Task<NodeInvokeResponse> HandleStatusAsync(NodeInvokeRequest reque
         catch (Exception ex)
         {
             Logger.Warn($"device.status: {section} collection failed: {ex.Message}");
-            return new { error = ex.Message };
+            return new { error = "collection failed" };
         }
     }
 
@@ -159,7 +159,7 @@ private async Task<NodeInvokeResponse> HandleStatusAsync(NodeInvokeRequest reque
         catch (Exception ex)
         {
             Logger.Warn($"device.status: {section} collection failed: {ex.Message}");
-            return new { error = ex.Message };
+            return new { error = "collection failed" };
         }
     }
 
diff --git a/src/OpenClaw.Shared/WindowsNodeClient.cs b/src/OpenClaw.Shared/WindowsNodeClient.cs
index 4c35522a7..776b2b54e 100644
--- a/src/OpenClaw.Shared/WindowsNodeClient.cs
+++ b/src/OpenClaw.Shared/WindowsNodeClient.cs
@@ -481,9 +481,9 @@ private async Task HandleNodeInvokeEventAsync(JsonElement root)
         catch (Exception ex)
         {
             _logger.Error($"[NODE] Command execution failed: {command}", ex);
-            await SendNodeInvokeResultAsync(requestId, false, null, $"Execution failed: {ex.Message}");
+            await SendNodeInvokeResultAsync(requestId, false, null, "Command execution failed");
             stopwatch.Stop();
-            RaiseInvokeCompleted(requestId, command, false, $"Execution failed: {ex.Message}", stopwatch.Elapsed);
+            RaiseInvokeCompleted(requestId, command, false, "Command execution failed", stopwatch.Elapsed);
         }
     }
     
@@ -1003,9 +1003,9 @@ private async Task HandleNodeInvokeAsync(JsonElement root, string? requestId)
         catch (Exception ex)
         {
             _logger.Error($"Command execution failed: {command}", ex);
-            await SendErrorResponseAsync(requestId, $"Execution failed: {ex.Message}");
+            await SendErrorResponseAsync(requestId, "Command execution failed");
             stopwatch.Stop();
-            RaiseInvokeCompleted(requestId, command, false, $"Execution failed: {ex.Message}", stopwatch.Elapsed);
+            RaiseInvokeCompleted(requestId, command, false, "Command execution failed", stopwatch.Elapsed);
         }
     }
 
diff --git a/src/OpenClaw.Tray.WinUI/Services/ExecApprovalPromptService.cs b/src/OpenClaw.Tray.WinUI/Services/ExecApprovalPromptService.cs
index 892b4ba0c..53e2a3126 100644
--- a/src/OpenClaw.Tray.WinUI/Services/ExecApprovalPromptService.cs
+++ b/src/OpenClaw.Tray.WinUI/Services/ExecApprovalPromptService.cs
@@ -87,7 +87,7 @@ public Task<ExecApprovalPromptDecision> RequestAsync(
             catch (Exception ex)
             {
                 _logger.Warn($"[ExecApproval] Prompt failed: {ex.Message}");
-                tcs.TrySetResult(ExecApprovalPromptDecision.Deny($"Prompt failed: {ex.Message}"));
+                tcs.TrySetResult(ExecApprovalPromptDecision.Deny("Approval prompt failed"));
             }
         }))
         {
diff --git a/src/OpenClaw.Tray.WinUI/Services/UrlNavigationApprovalService.cs b/src/OpenClaw.Tray.WinUI/Services/UrlNavigationApprovalService.cs
index 7893ce943..6845ee297 100644
--- a/src/OpenClaw.Tray.WinUI/Services/UrlNavigationApprovalService.cs
+++ b/src/OpenClaw.Tray.WinUI/Services/UrlNavigationApprovalService.cs
@@ -99,7 +99,7 @@ public Task<UrlNavigationApprovalDecision> RequestAsync(
             catch (Exception ex)
             {
                 _logger.Warn($"[NavigationApproval] Prompt failed: {ex.Message}");
-                return UrlNavigationApprovalDecision.Deny($"Prompt failed: {ex.Message}");
+                return UrlNavigationApprovalDecision.Deny("Approval prompt failed");
             }
         }, cancellationToken);
     }
diff --git a/tests/OpenClaw.Shared.Tests/CapabilityTests.cs b/tests/OpenClaw.Shared.Tests/CapabilityTests.cs
index 8b75c1fb5..93cb488c0 100644
--- a/tests/OpenClaw.Shared.Tests/CapabilityTests.cs
+++ b/tests/OpenClaw.Shared.Tests/CapabilityTests.cs
@@ -1813,7 +1813,7 @@ public async Task Status_BatterySection_GracefulOnFailure()
         Assert.True(res.Ok);
         var battery = GetPayload(res).GetProperty("battery");
         Assert.NotEqual(JsonValueKind.Undefined, battery.GetProperty("error").ValueKind);
-        Assert.Contains("No battery hardware", battery.GetProperty("error").GetString());
+        Assert.Equal("collection failed", battery.GetProperty("error").GetString());
         // Legacy fields must still be present for backward compat
         Assert.True(battery.TryGetProperty("level", out _), "battery.level missing on failure path");
         Assert.Equal("unknown", battery.GetProperty("state").GetString());