# Cloudflare "Just a moment..." / "Checking your browser" challenge loop (Verify you are human never finishes)

**Code:** `Just a moment...` · **Category:** Cloudflare · **Seen on:** Cloudflare

The Cloudflare challenge keeps reloading — the browser can’t pass it because cookies/JavaScript are blocked, the clock is wrong, or extensions interfere.

## Meaning

Challenges need JavaScript and the cf_clearance cookie. Blocking third-party cookies, strict privacy extensions, outdated browsers, VPNs with bad reputation or wrong system time cause loops. Site owners with very high Security Level or Under Attack mode make it worse.

## Common causes

- Cookies or JavaScript blocked
- Privacy/ad-block extensions
- VPN/IP with poor reputation
- Wrong device clock
- Owner’s Under Attack mode/high security level

## Quick fix

1. Enable cookies/JS, disable extensions, try a private window
2. Turn off VPN; fix system time
3. Owner: lower Security Level or add skip rules for trusted traffic

## Detailed fix by platform

### Cloudflare

1. `# Security → Settings → Security Level / I'm Under Attack mode (owner side)`

## How to diagnose

1. **Browser** — Works in another browser/profile?
2. **Network** — VPN?
3. **Clock** — Correct time?

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Source: [WhatIsMyError](https://whatismyerror.com/errors/cloudflare/challenge-loop-just-a-moment)