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claude-code - 💡(How to fix) Fix [BUG] indows 11 Pro: Cowork, Connectors, and Claude Code all broken after latest auto-update — ERR_CONNECTION_RESET + OAuthError [1 comments, 2 participants]

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anthropics/claude-code#47104•Fetched 2026-04-13 05:41:21
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Error Message

Error 1 — Cowork: Failed to start Claude's workspace Request error: net::ERR_CONNECTION_RESET Sometimes alternates with net::ERR_CONNECTION_ABORTED. Error 2 — Connectors: Could not load connectors directory Could not attach to MCP server Kapture Browser Automation Error 3 — Claude Code (in Desktop): Error invoking remote method '$eipc_message$45a8c035-be9c-4c52-b315-81a10e384931$claude.web$LocalSessions$_start': OAuthError: Unable to start session. Check your internet connection and try again.

Code Example

Error 1 — Cowork:
Failed to start Claude's workspace
Request error: net::ERR_CONNECTION_RESET
Sometimes alternates with net::ERR_CONNECTION_ABORTED.
Error 2 — Connectors:
Could not load connectors directory
Could not attach to MCP server Kapture Browser Automation
Error 3 — Claude Code (in Desktop):
Error invoking remote method '$eipc_message$_45a8c035-be9c-4c52-b315-81a10e384931_$_claude.web_$_LocalSessions_$_start':
OAuthError: Unable to start session. Check your internet connection and try again.
RAW_BUFFERClick to expand / collapse

Preflight Checklist

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

What's Wrong?

What's Wrong? After the latest Claude Desktop auto-update, all three premium features stopped working simultaneously on Windows 11 Pro. Only basic Chat still functions. Error 1 — Cowork: Failed to start Claude's workspace Request error: net::ERR_CONNECTION_RESET Sometimes alternates with net::ERR_CONNECTION_ABORTED. Error 2 — Connectors: Could not load connectors directory Could not attach to MCP server Kapture Browser Automation Error 3 — Claude Code (in Desktop): Error invoking remote method '$eipc_message$45a8c035-be9c-4c52-b315-81a10e384931$claude.web$LocalSessions$_start': OAuthError: Unable to start session. Check your internet connection and try again. Important context: Everything was working perfectly before the last auto-update. The update broke all three features simultaneously. Environment

OS: Windows 11 Pro (latest) Claude Desktop: Latest version (auto-updated) Plan: Max ($100/month) Internet: Working perfectly — Chat mode works fine Antivirus: Kaspersky (tested with it completely disabled — same errors) No VPN active

Everything I've tried (all failed):

Restarting Claude Desktop multiple times Reinstalling workspace from in-app prompt Full uninstall + reinstall of Claude Desktop (got 0x80073CF6 AddPackage failed during reinstall due to residual packages) Restarting PC and router Enabling Hyper-V (vmms service now running) Manually starting CoworkVMService via PowerShell (service shows as Running) Manually creating WinNAT rule: New-NetNat -Name "cowork-vm-nat" -InternalIPInterfaceAddressPrefix "172.16.0.0/24" (created successfully, Active: True) Disabling Kaspersky antivirus entirely Cleaning residual files from %APPDATA%\Claude, %LOCALAPPDATA%\Claude Deleting CoworkVMService from registry and reinstalling

Diagnostic output: powershellPS> Get-Service vmms Status: Running

PS> Get-Service CoworkVMService Status: Running

PS> hcsdiag list (empty — no VM running)

PS> Get-HnsNetwork | Format-List Name, Id, Subnets Name: Default Switch only (no cowork-vm-nat network) Logs show repeated TypeError: Failed to fetch against assets-proxy.anthropic.com and api.anthropic.com, plus [MCP Registry] fetch failed with diagnostics. Impact: 3+ working days of lost productivity. I run a digital marketing agency and rely on Cowork and Claude Code daily. I am paying $100/month for what is currently a $20 Chat-only experience. Expected behavior: Cowork workspace starts, Connectors load, Claude Code authenticates — as they did before the update. Related issues: #24918, #25136, #27801, #42591, #27010

What Should Happen?

Cowork workspace should start successfully, Connectors Directory should load, and Claude Code should authenticate — as they all did before the latest auto-update.

Error Messages/Logs

Error 1 — Cowork:
Failed to start Claude's workspace
Request error: net::ERR_CONNECTION_RESET
Sometimes alternates with net::ERR_CONNECTION_ABORTED.
Error 2 — Connectors:
Could not load connectors directory
Could not attach to MCP server Kapture Browser Automation
Error 3 — Claude Code (in Desktop):
Error invoking remote method '$eipc_message$_45a8c035-be9c-4c52-b315-81a10e384931_$_claude.web_$_LocalSessions_$_start':
OAuthError: Unable to start session. Check your internet connection and try again.

Steps to Reproduce

  1. Have a working Claude Desktop installation on Windows 11 Pro with Cowork, Connectors, and Claude Code all functioning normally
  2. Receive the latest Claude Desktop auto-update
  3. Open Claude Desktop → switch to Cowork tab
  4. Observe: "Failed to start Claude's workspace — Request error: net::ERR_CONNECTION_RESET"
  5. Observe: "Could not load connectors directory" banner
  6. Open Claude Code in Desktop → Observe: "OAuthError: Unable to start session"
  7. Regular Chat mode works perfectly — only premium features are broken

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

N/A — using Claude Code through Desktop app, CLI not installed

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

No response

extent analysis

TL;DR

The most likely fix involves resolving the connection issues between Claude Desktop and its dependent services, possibly by reconfiguring network settings or reinstalling the application with careful attention to removing all residual files and settings.

Guidance

  1. Reinstall Claude Desktop with a clean slate: Completely uninstall Claude Desktop, remove all residual files from %APPDATA%\Claude and %LOCALAPPDATA%\Claude, and then reinstall. This step aims to remove any corrupted files or settings that might be causing the connection issues.
  2. Verify network configuration: Ensure that the network settings, including any NAT rules or firewall configurations, are correctly set up to allow Claude Desktop to communicate with its required services. The New-NetNat command was successfully executed, but the Get-HnsNetwork command did not show the cowork-vm-nat network, indicating a potential issue with the network setup.
  3. Check for conflicts with antivirus software: Although Kaspersky was disabled during testing, it's essential to ensure that no other security software is interfering with Claude Desktop's operation. Temporarily disabling all security software during the reinstallation and initial setup might help.
  4. Review system logs for errors: After reinstalling and attempting to use the premium features, check the system logs for any errors related to Claude Desktop or its services. This could provide more specific clues about what's going wrong.

Example

No specific code example is applicable in this scenario, as the issue seems related to configuration and network settings rather than code.

Notes

The exact cause of the problem is not clear from the information provided, but it appears to be related to network connectivity issues following an auto-update. The fact that basic Chat mode works fine suggests that the problem is specific to the premium features and their dependencies.

Recommendation

Apply a workaround by carefully reinstalling Claude Desktop and verifying network configurations, as the root cause of the issue seems to be related to the update and network connectivity rather than a straightforward code fix.

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claude-code - 💡(How to fix) Fix [BUG] indows 11 Pro: Cowork, Connectors, and Claude Code all broken after latest auto-update — ERR_CONNECTION_RESET + OAuthError [1 comments, 2 participants]