Encountering Error Code 15: This Request Was Blocked by Security Rules can be frustrating, especially when trying to access a website or service that you rely on. This error typically occurs due to security measures that prevent unauthorized access, but sometimes legitimate users get caught in these restrictions as well.
What Causes Error Code 15?
This error is usually triggered by security settings implemented on a website or network. The most common causes include:
- Firewall or security rule restrictions preventing access.
- Geographical blocking due to regional access policies.
- Incorrect system time or date settings on your device.
- ISP or network-related restrictions.
- An overprotective security plugin or software blocking the request.

How to Fix Error Code 15
Fortunately, there are several ways to troubleshoot and resolve this issue. Follow these steps:
1. Check Your System Date and Time
One of the simplest yet overlooked causes of Error Code 15 is an incorrect system clock. Websites often check time synchronization for security validation.
- Ensure that your system date and time are set correctly.
- If wrong, adjust them manually or enable automatic synchronization with internet time servers.
2. Disable VPN and Proxy Services
Some websites restrict access to users who appear to be using VPNs or proxies. If you have one enabled:
- Temporarily turn off your VPN or proxy and try accessing the site again.
- Clear your browser’s cache after disabling the VPN.
3. Check Your Firewall and Security Software
Overly strict firewall settings or security software can sometimes block legitimate requests. To verify:
- Temporarily disable your firewall or antivirus software.
- Try accessing the website again.
- If this works, add the site to your security software’s whitelist.

4. Use a Different Network
Network restrictions can also trigger the error. If possible:
- Try accessing the site using a different internet connection (e.g., mobile hotspot).
- If this works, your network might have restrictions in place.
5. Contact the Website Administrator
If none of the above steps work, the issue may be on the website’s end. Reach out to the website’s support team and provide them with details, including:
- A screenshot of the error message.
- Your IP address.
- The date and time you encountered the issue.
Preventing Future Occurrences
To avoid encountering this error again:
- Keep your system time and date updated.
- Use reputable security software and keep it configured properly.
- Avoid using suspicious or unreliable VPN or proxy services.

Conclusion
Error Code 15 is a security measure designed to protect online services, but it can sometimes block legitimate users. By following the troubleshooting steps outlined above, you can regain access while ensuring that your device remains secure. If all else fails, reaching out to the website administrator is the best course of action.