When you try to access a site, you can find messages like:
"Sorry, you have been blocked"
"Access Denied"
"Your request has been blocked"
"Cloudflare Security Check Failed"
These blocks are generated by Cloudflare, a security platform used by millions of sites to protect servers from attacks, malicious bots and suspicious accesses.
Why does Cloudflare block users?
The Cloudflare analyzes several factors before allowing access to a page:
IP address
Geographical location
Network reputation
Use of VPN or Proxy
Navigation behavior
Number of requests sent
If any of these factors are considered suspicious, the system can automatically block access.
How to solve the problem
1. Clean browser cache
Corrupt files or old cookies can cause conflicts.
Steps:
Open the browser settings.
Clean cookies and cache.
Restart the browser.
Try to access it again.
2. Disable VPN or Proxy
Many blocks occur because Cloudflare identifies shared IPs used by VPNs.
Test access site:
No VPN
No Proxy
In a common residential connection
3. Network exchange
If possible:
Use the 4G or 5G phone.
Connect to the other Wi-Fi network.
Restart your router.
This could generate a new IP address.
4. Check browser extensions
Some extensions may interfere with navigation:
Aggressive ad blockers
Automation tools
Scrap extensions
Try opening the site in an anonymous window.
5. Wait a few minutes
If many attempts at access have occurred in a short time, the blockage may be temporary.
Usually access returns after a few minutes or hours.
6. Contact the site administrator
If the problem persists, send:
Your IP address
Blocking schedule
Ray ID displayed on screen
That information helps to identify the cause.
What is Ray ID?
The Ray ID is a unique identifier generated by the Cloudflare for each security event.
It allows the administrator to find exactly the reason for the blockage.
Conclusion
In most cases, blocking Cloudflare is related to suspicious IPs, VPNs or behaviors considered automated. Following the steps above, you can restore access quickly or provide enough information for the administrator to solve the problem.