Sentry Blocked by Ad Blockers (Tunnel Fix)
Workaround available Browser JavaScript, Next.js Updated November 13, 2026Based on 3 user reportsHow we research
Quick answer
Ad blockers and Brave block browser requests to sentry.io, so frontend errors never arrive. Route events through a same-origin tunnel to get them back.
Most likely fix: Use tunnelRoute in Next.js
How to fix it
Try these in order — the most common fix is first.
1. Use tunnelRoute in Next.js
- Set tunnelRoute in withSentryConfig
- Redeploy and confirm envelopes go to your own domain
Did this fix it?2. Add a custom tunnel for other frameworks
- Create a server endpoint that forwards envelopes to Sentry
- Set the tunnel option in Sentry.init
- Forward 429 status and rate-limit headers so the SDK backs off
Did this fix it?3. Avoid a guessable path
- Prefer a random route over /sentry or /monitoring
Did this fix it?
Symptoms
Backend errors appear but frontend errors from some users are missing.
Why it happens
- Ad blocker lists include Sentry endpoints
- Brave Shields blocks the request even when the site is allowlisted
- A fixed, well-known tunnel path gets added to block lists
This guide also covers
- sentry blocked by adblock
- sentry brave blocked
- sentry tunnel next.js
Still not working?
If Sentry keeps failing, you're not alone. See every Sentry problem users report or the alternatives people switch to.
Have an app idea? Our small team builds any software: web and mobile apps, games, desktop, AI tools. Price agreed together.
Talk to us