Over the past few days, several users have reported that Claude Desktop on Windows may fail to start right after an automatic update. If this is happening to you, it is not necessarily an issue with your setup. It is a known incident on Anthropic’s side, tied to a specific app version.
Typical symptom: Claude Desktop does not launch. You may see the process in Task Manager, but no window shows up.
The issue
Version app-1.1.4173 of Claude Desktop includes a bug related to the JavaScript library @formatjs/intl, which handles internationalization and formatting (dates, numbers, etc.).
This may affect machines where the Windows system language is not English (not officially confirmed), but Anthropic has acknowledged the incident.
Reference: https://status.claude.com/incidents/d392wcgvxl01
Fix options
Option 1 - Download and reinstall the latest version
The easiest fix is to download and reinstall Claude Desktop from Anthropic’s official website. A newer version than 1.1.4173 should no longer have this issue.
Download: https://claude.ai/download
Option 2 - Remove the problematic version folder (PowerShell)
If you do not want to reinstall manually, you can delete only the folder for the broken version. On the next launch, Claude Desktop should fall back to a previous version and then update itself to a newer one.
Open PowerShell and run:
# Stop Claude Desktop and the native host process
Get-Process *claude* -ErrorAction SilentlyContinue | Stop-Process -Force
Get-Process *chrome-native-host* -ErrorAction SilentlyContinue | Stop-Process -Force
# Wait for handles to release
Start-Sleep -Seconds 2
# Remove the buggy version folder
Remove-Item -Recurse -Force "$env:LOCALAPPDATA\\AnthropicClaude\\app-1.1.4173"
Then start Claude Desktop again. It should update automatically to a fixed version.
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