[BUG] Claude Desktop 1.1.5368.0 fails to launch on Windows 10 Pro (Build 19045) - CoreMessaging.dll crash (0xc0000602)

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Claude Desktop fails to launch immediately after installation. An error dialog appears: "We are so sorry, Claude Desktop failed to launch. Please check for updates and try again."

Event Viewer shows the crash is caused by CoreMessaging.dll with exception code 0xc0000602.

This issue is similar to #25914 and #28231, but occurs on Windows 10 (not Windows 11 25H2).

Environment:

• OS: Windows 10 Pro, Version 2009, Build 19045
• Claude Desktop: 1.1.5368.0 (MSIX)
• Architecture: x64

Windows Features Status:

• HypervisorPlatform: Enabled
• VirtualMachinePlatform: Enabled
• Containers: Enabled
• Microsoft-Hyper-V-All: Disabled

Service Status:

• CoworkVMService: Running

What Should Happen?

Claude Desktop should launch normally without crashing.

Error Messages/Logs

TimeCreated: 2026-03-08 21:40:06
EventID: 1000
Faulting application name: Claude.exe, version: 1.1.5368.0, timestamp: 0x698e6603
Faulting module name: CoreMessaging.dll, version: 10.0.19041.5915, timestamp: 0x0bfde6dc
Exception code: 0xc0000602
Fault offset: 0x0000000000072e16
Faulting process ID: 0x3dc4
Faulting application path: C:\Program Files\WindowsApps\Claude_1.1.5368.0_x64__pzs8sxrjxfjjc\app\Claude.exe
Faulting module path: C:\Windows\System32\CoreMessaging.dll
Report ID: 49ab7a54-a852-4a33-b02b-b9f4dfe5f966
Faulting package full name: Claude_1.1.5368.0_x64__pzs8sxrjxfjjc

Steps to Reproduce

1. Install Windows 10 Pro (Build 19045) with latest updates
2. Download Claude Desktop from https://claude.ai/download
3. Run installer, installation completes successfully
4. Launch Claude Desktop from Start menu
5. Error dialog appears immediately

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

1.1.5368.0

Platform

Other

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_