diff --git a/packages/cli/src/services/BuiltinCommandLoader.test.ts b/packages/cli/src/services/BuiltinCommandLoader.test.ts
index b2fe4ef2e..14d5e14a7 100644
--- a/packages/cli/src/services/BuiltinCommandLoader.test.ts
+++ b/packages/cli/src/services/BuiltinCommandLoader.test.ts
@@ -207,6 +207,33 @@ describe('BuiltinCommandLoader', () => {
     expect(modelCmd?.name).toBe('model');
   });
 
+  it('should still load all other commands when ideCommand() throws', async () => {
+    // Simulate ideCommand() failure (e.g., platform-specific process detection fails)
+    const { ideCommand: ideCommandMock } = await import(
+      '../ui/commands/ideCommand.js'
+    );
+    (ideCommandMock as Mock).mockRejectedValueOnce(
+      new Error('PowerShell not available'),
+    );
+
+    const loader = new BuiltinCommandLoader(mockConfig);
+    const commands = await loader.loadCommands(new AbortController().signal);
+
+    // IDE command should NOT be present
+    const ideCmd = commands.find((c) => c.name === 'ide');
+    expect(ideCmd).toBeUndefined();
+
+    // But all other built-in commands should still be loaded
+    const modelCmd = commands.find((c) => c.name === 'model');
+    expect(modelCmd).toBeDefined();
+
+    const statusCmd = commands.find((c) => c.name === 'status');
+    expect(statusCmd).toBeDefined();
+
+    const mcpCmd = commands.find((c) => c.name === 'mcp');
+    expect(mcpCmd).toBeDefined();
+  });
+
   it('should always include hooks command regardless of disableAllHooks', async () => {
     // When disableAllHooks is false
     const loader1 = new BuiltinCommandLoader(mockConfig);
diff --git a/packages/cli/src/services/BuiltinCommandLoader.ts b/packages/cli/src/services/BuiltinCommandLoader.ts
index df4555d73..5db6c965a 100644
--- a/packages/cli/src/services/BuiltinCommandLoader.ts
+++ b/packages/cli/src/services/BuiltinCommandLoader.ts
@@ -26,6 +26,7 @@ import { extensionsCommand } from '../ui/commands/extensionsCommand.js';
 import { helpCommand } from '../ui/commands/helpCommand.js';
 import { hooksCommand } from '../ui/commands/hooksCommand.js';
 import { ideCommand } from '../ui/commands/ideCommand.js';
+import { createDebugLogger } from '@qwen-code/qwen-code-core';
 import { initCommand } from '../ui/commands/initCommand.js';
 import { languageCommand } from '../ui/commands/languageCommand.js';
 import { mcpCommand } from '../ui/commands/mcpCommand.js';
@@ -47,6 +48,8 @@ import { vimCommand } from '../ui/commands/vimCommand.js';
 import { setupGithubCommand } from '../ui/commands/setupGithubCommand.js';
 import { insightCommand } from '../ui/commands/insightCommand.js';
 
+const builtinDebugLogger = createDebugLogger('BUILTIN_COMMAND_LOADER');
+
 /**
  * Loads the core, hard-coded slash commands that are an integral part
  * of the Qwen Code application.
@@ -62,6 +65,19 @@ export class BuiltinCommandLoader implements ICommandLoader {
    * @returns A promise that resolves to an array of `SlashCommand` objects.
    */
   async loadCommands(_signal: AbortSignal): Promise<SlashCommand[]> {
+    // Load ideCommand separately with error handling so that a failure
+    // (e.g., platform-specific process detection on Windows) does not
+    // prevent ALL built-in commands from loading.
+    let resolvedIdeCommand: SlashCommand | null = null;
+    try {
+      resolvedIdeCommand = await ideCommand();
+    } catch (error) {
+      builtinDebugLogger.warn(
+        'Failed to load IDE command:',
+        error instanceof Error ? error.message : String(error),
+      );
+    }
+
     const allDefinitions: Array<SlashCommand | null> = [
       aboutCommand,
       agentsCommand,
@@ -81,7 +97,7 @@ export class BuiltinCommandLoader implements ICommandLoader {
       extensionsCommand,
       helpCommand,
       hooksCommand,
-      await ideCommand(),
+      resolvedIdeCommand,
       initCommand,
       languageCommand,
       mcpCommand,
diff --git a/packages/cli/src/ui/hooks/slashCommandProcessor.ts b/packages/cli/src/ui/hooks/slashCommandProcessor.ts
index b0d7806e7..c2124dd1b 100644
--- a/packages/cli/src/ui/hooks/slashCommandProcessor.ts
+++ b/packages/cli/src/ui/hooks/slashCommandProcessor.ts
@@ -333,17 +333,24 @@ export const useSlashCommandProcessor = (
   useEffect(() => {
     const controller = new AbortController();
     const load = async () => {
-      const loaders = [
-        new McpPromptLoader(config),
-        new BuiltinCommandLoader(config),
-        new BundledSkillLoader(config),
-        new FileCommandLoader(config),
-      ];
-      const commandService = await CommandService.create(
-        loaders,
-        controller.signal,
-      );
-      setCommands(commandService.getCommands());
+      try {
+        const loaders = [
+          new McpPromptLoader(config),
+          new BuiltinCommandLoader(config),
+          new BundledSkillLoader(config),
+          new FileCommandLoader(config),
+        ];
+        const commandService = await CommandService.create(
+          loaders,
+          controller.signal,
+        );
+        // Avoid overwriting newer results from a subsequent effect run
+        if (!controller.signal.aborted) {
+          setCommands(commandService.getCommands());
+        }
+      } catch (error) {
+        debugLogger.error('Failed to load slash commands:', error);
+      }
     };
 
     load();