claude-code - 💡(How to fix) Fix Extension v1.0.69 (clean install on fresh Chrome profile). Service worker console errors [1 comments, 2 participants]

Official PRs (…)
ON THIS PAGE

Recommended Tools

×6

Utilities matched from this issue’s tags and category — try them while you read without losing context.

GitHub issue graph ai analysis

Paste a GitHub issue URL. We fetch that issue, discover linked issues from bodies/comments/timeline, collect linked pull requests, and produce a structured English report.

The report is written in English Markdown for sharing and archival.

Helpful · Quick feedback

Loading…
GitHub stats
anthropics/claude-code#54760Fetched 2026-04-30 06:36:47
View on GitHub
Comments
1
Participants
2
Timeline
9
Reactions
0
Author
Timeline (top)
labeled ×7closed ×1commented ×1

Error Message

mcpPermissions-BSnCI2j1.js:1 Uncaught (in promise) Error: Could not establish connection. Receiving end does not exist. After full extension reinstall + Chrome force-quit, only Debugger is not attached remains. After full Chrome uninstall + profile reset (mv ~/Library/Application\ Support/Google/Chrome ...backup) + fresh Chrome install + fresh extension install + Claude account sign-in, same Debugger is not attached error persists.

Root Cause

Same issue, macOS, Chrome (latest, auto-updated this session). Extension v1.0.69 (clean install on fresh Chrome profile). Service worker console errors (in order): mcpPermissions-BSnCI2j1.js:1 Uncaught (in promise) Error: Could not establish connection. Receiving end does not exist. Unchecked runtime.lastError: Cannot access a chrome:// URL Unchecked runtime.lastError: Debugger is not attached to the tab with id: <N> After full extension reinstall + Chrome force-quit, only Debugger is not attached remains. After full Chrome uninstall + profile reset (mv ~/Library/Application\ Support/Google/Chrome ...backup) + fresh Chrome install + fresh extension install + Claude account sign-in, same Debugger is not attached error persists. Reproduces on every domain tested: example.com, bst.cisco.com, google.com. Not site-specific. Worked normally 2 days ago — no user-initiated changes since. Permission state: "On all sites" granted at install time. Approved Sites list at chrome-extension://fcoeoabgfenejglbffodgkkbkcdhcgfn/options.html does not persist additions via Manage Extension, Options page, or click-to-grant. No runtime permission prompt appears anywhere in any window. Symptom from MCP layer: every browser action (screenshot, get_page_text, navigate) returns permission_required: <domain> regardless of site or permission state. Filing because this is the third confirmed case of this defect chain and I've fully eliminated every user-side variable.

RAW_BUFFERClick to expand / collapse

Same issue, macOS, Chrome (latest, auto-updated this session). Extension v1.0.69 (clean install on fresh Chrome profile). Service worker console errors (in order): mcpPermissions-BSnCI2j1.js:1 Uncaught (in promise) Error: Could not establish connection. Receiving end does not exist. Unchecked runtime.lastError: Cannot access a chrome:// URL Unchecked runtime.lastError: Debugger is not attached to the tab with id: <N> After full extension reinstall + Chrome force-quit, only Debugger is not attached remains. After full Chrome uninstall + profile reset (mv ~/Library/Application\ Support/Google/Chrome ...backup) + fresh Chrome install + fresh extension install + Claude account sign-in, same Debugger is not attached error persists. Reproduces on every domain tested: example.com, bst.cisco.com, google.com. Not site-specific. Worked normally 2 days ago — no user-initiated changes since. Permission state: "On all sites" granted at install time. Approved Sites list at chrome-extension://fcoeoabgfenejglbffodgkkbkcdhcgfn/options.html does not persist additions via Manage Extension, Options page, or click-to-grant. No runtime permission prompt appears anywhere in any window. Symptom from MCP layer: every browser action (screenshot, get_page_text, navigate) returns permission_required: <domain> regardless of site or permission state. Filing because this is the third confirmed case of this defect chain and I've fully eliminated every user-side variable.

extent analysis

TL;DR

The issue is likely related to a permission or connection problem between the Chrome extension and the service worker, and a potential workaround could involve re-examining the extension's permission settings and the Approved Sites list.

Guidance

  • Verify that the extension's permission state is correctly set to "On all sites" and that the Approved Sites list is properly configured, as the issue might be related to permission inconsistencies.
  • Check if the chrome:// URL access error is related to the extension's functionality and if there are any specific requirements for accessing these URLs.
  • Investigate the "Debugger is not attached" error, as it might be a red herring or a symptom of a deeper issue with the extension's communication with the service worker.
  • Test the extension on a different Chrome profile or a different machine to rule out any environment-specific issues.

Example

No code snippet is provided as the issue seems to be related to the extension's configuration and permissions rather than a specific code problem.

Notes

The issue seems to be specific to the Chrome extension and its interaction with the service worker, and the fact that it persists after a full reinstall and profile reset suggests that it might be a problem with the extension itself rather than a user-side issue.

Recommendation

Apply workaround: Re-examine the extension's permission settings and the Approved Sites list to ensure that they are correctly configured, and test the extension on a different Chrome profile or machine to rule out any environment-specific issues. This is recommended because the issue seems to be related to the extension's configuration and permissions, and a workaround might be possible without requiring an upgrade to a fixed version.

Vote matrix · Quick signals

Works
Did the solution work? Tap to confirm.
Easy Fix
Was it a quick fix?
Time Saver
Did it save you time?
Blocking
Was it severely blocking?
Common Issue
Are others likely hitting this too?
Flaky / Intermittent
Is it intermittent?
Verified / Reproducible
Can you reproduce it reliably?
Loading…

Still need to ship something?

×6

Another batch ranked right after the header list — different links, same matching logic.

Back to top recommendations

TRENDING

claude-code - 💡(How to fix) Fix Extension v1.0.69 (clean install on fresh Chrome profile). Service worker console errors [1 comments, 2 participants]