TP-Link Router Error Code 15: How to Fix It

Easy 15-30 minutes Medium Severity Verified June 2026
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Error Code
15
Brand
TP-Link
Product Type
networking
Severity
Medium
DIY Difficulty
Easy
Estimated Fix Time
15-30 minutes
TP-Link Error Code 15 indicates that a device you have blocked through the router's parental controls or access control list is still able to access the internet or local network. This typically happens when the block rule has not been applied correctly, the device has changed its MAC address, or the router firmware has a bug preventing the rule from taking effect. Following the steps below will help you fully enforce the block and keep the restricted device offline.
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Tools You'll Need

How to Fix Error Code 15

  1. Log In to the TP-Link Admin Panel

    Never share your admin login credentials. Change the default admin password if you have not done so already.

  2. Review the Parental Controls or Access Control Settings

  3. Verify the Correct MAC Address Is Blocked

    If the target device belongs to a child, remind them not to re-enable MAC randomization, as this can bypass the block again.

  4. Re-Apply or Recreate the Block Rule

  5. Restart the Router to Flush Active Sessions

    Rebooting the router will temporarily disconnect all devices in your home from the internet for 1-2 minutes.

  6. Update the Router Firmware

    Do NOT power off the router during a firmware update. This can permanently brick the device.

  7. Use the TP-Link Tether App as an Alternative

  8. Factory Reset as a Last Resort

    A factory reset will erase ALL router settings including your Wi-Fi name, password, and any existing rules. Make sure you have your ISP credentials ready to reconnect to the internet.
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When to Call a Professional

If you have completed all steps including a factory reset and the blocked device is still able to access the internet, the router firmware may have a deeper bug that TP-Link needs to address. Contact TP-Link customer support at support.tp-link.com with your router model number and firmware version. If the device is on a business or school network, contact your IT administrator, as enterprise-grade content filtering (such as DNS-based filtering or a separate firewall appliance) may be required for reliable enforcement.

Frequently Asked Questions

Why is my TP-Link parental controls blocked device still able to access the internet?
The most common reasons are: the device is using a randomized or spoofed MAC address that doesn't match the one in the block rule, the block schedule has expired or uses the wrong time zone, or a firmware bug is preventing the rule from being enforced. Try recreating the block rule using the device's current MAC address from the DHCP client list, and update your router firmware.
How do I find the MAC address of a device connected to my TP-Link router?
Log in to the TP-Link admin panel at 192.168.0.1 or 192.168.1.1, then go to 'Advanced' > 'Network' > 'DHCP Client List'. This table shows every connected device along with its IP address, MAC address, and hostname. Use this MAC address when setting up your block rule to make sure you are targeting the correct device.
Can a device bypass TP-Link parental controls using a VPN?
Yes. If the target device has a VPN app installed and running, it can tunnel its traffic through an encrypted connection that bypasses MAC-based and DNS-based blocking on your router. To prevent this, you would need to block known VPN ports or use a more advanced router or third-party DNS filtering service such as OpenDNS or Cloudflare Gateway.
Does TP-Link Error Code 15 mean my router is broken?
Not necessarily. Error Code 15 typically reflects a configuration issue rather than a hardware failure. The router is functioning normally but the parental control or access control rule is not being applied as expected. Following the troubleshooting steps — especially recreating the block rule, checking for MAC address changes, and updating firmware — resolves the issue in most cases without any hardware repairs.
Will updating TP-Link firmware fix parental controls not working?
In many cases, yes. TP-Link has released firmware updates that specifically address bugs in the parental controls and access control features. Always check the TP-Link support website for your exact router model and install the latest available firmware before concluding that the device is defective.

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