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ASProxy64.dll Access Violation Causes Crashes: Astrill VPN and CC Switch

Quick fix

Add cc-switch.exe to Astrill’s Help → Hard excluded apps, then sign in to Astrill again.

Symptom

Section titled “Symptom”
Error output
异常代码： 0xc0000005
English translation

Exception code: 0xc0000005

Cause

Section titled “Cause”

After Astrill VPN is installed on Windows, ASProxy64.dll may be injected into the cc-switch.exe process and trigger an access violation, causing CC Switch to crash or fail to start. The user in Issue #2513 confirmed that adding cc-switch.exe to Astrill’s Help → Hard excluded apps and signing in again restored normal operation. Another comment mentioned Astrill’s LSP Uninstaller as a solution, but noted that OpenWeb mode may be affected; both approaches were discussed.

Fix

Section titled “Fix”

  1. Open Astrill, select OpenWeb mode from the menu, then go to Help → Hard excluded apps.

  2. Add cc-switch.exe to Hard excluded apps, then sign in to Astrill again.

  3. Restart CC Switch and check whether it opens normally.

Affected Versions

Section titled “Affected Versions”
ToolClaude Code
Version3.14.1、3.15.0（cc-switch 版本；影响范围未确认）
PlatformsWindows

Source Issues

Section titled “Source Issues”

This page is distilled from 2 real issues

FAQ

Section titled “FAQ”
What if Astrill settings do not have Application Filter or Exclude apps?
A comment says Application Filter may not work; switch to OpenWeb mode, then use Hard excluded apps under Help to add cc-switch.exe.
Do I need to sign in to Astrill again after adding the exclusion?
Yes. The steps provided in the comment say to add cc-switch.exe and then sign in to Astrill again.
Can I use Astrill’s LSP Uninstaller?
A comment on Issue #2513 says the LSP Uninstaller can remove the relevant DLL, but notes that this may affect OpenWeb; try the Hard excluded apps method first.
Section titled “Related problems”
Codex startup failure: missing supports_reasoning_summariesUpgrade cc-switch to v3.18.0 or later, then switch to the DeepSeek provider again to regenerate the model catalog. This automatically fills in the… (Codex)4 issues mergedRequest exceeds the context windowNo verified solution was provided in the original post; this issue was closed as a duplicate related to catalog configuration and automatic compression.1 issues mergedcc-switch crashes on launch / white screen / black screen / background crashUpgrade to the latest. Windows white screen: install WebView2. Proxy crash: change port, upgrade to v3.9.1+. Old macOS/Linux: use the CLI or distro package.20 issues merged

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