Copper Gmail Extension Not Working
Workaround available Chrome, Gmail, Copper web app Updated November 13, 2026Based on 3 user reportsHow we research
Quick answer
The Copper Chrome extension usually fails because of stale cache, a conflicting extension or a broken install. Clearing browser data or reinstalling it fixes most cases.
Most likely fix: Clear browsing data and update Chrome
How to fix it
Try these in order — the most common fix is first.
1. Clear browsing data and update Chrome
- In Chrome open Settings > Privacy and security > Clear browsing data
- Choose "All time" and tick cookies and other site data plus hosted app data
- Update Chrome via Settings > About Chrome
- Quit and reopen Chrome, then sign in to Copper again
Did this fix it?2. Reinstall the extension
- Open chrome://extensions and remove Copper CRM for Gmail
- Open the Copper CRM for Gmail page in the Chrome Web Store and click Add to Chrome
- Sign in to Copper again
Did this fix it?3. Disable conflicting extensions
- Turn off Google Labs features and other Gmail add-ons
- Restart Chrome and sign in again; try an Incognito window with only Copper enabled (email tracking does not work in Incognito)
Did this fix it?4. Check Copper status
- Open status.copper.com and look for an open extension incident
- If none, contact Copper support from the in-app chat
Did this fix it?
Symptoms
The Copper sidebar is missing in Gmail, will not sign in, or shows errors such as extension context invalidated or ajax authorization failed.
Why it happens
- Stale cookies or cache in Chrome
- Outdated Chrome or extension version
- Another extension or Google Labs feature conflicting
- Broken extension install
- Active Copper outage
This guide also covers
- copper gmail extension not working
- copper crm chrome extension not loading
- copper extension context invalidated
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