| Cause | Description | |-------|-------------| | MAC address filtering | Router only allows pre-approved MAC addresses | | Manual blacklist | Admin blocked the device via router UI | | IP address ban | Device’s static/fixed IP conflicts or is banned | | DHCP pool exhaustion | No available IP address to assign | | Failed authentication | Too many wrong Wi-Fi password attempts | | Access schedule | Device blocked due to time-based parental controls | | Network isolation | Client isolation or guest network restrictions |

If you do not have access to the router settings, you can often bypass a MAC-based block by changing your device's unique hardware identifier. www.tp-link.comhttps://www.tp-link.com

If a device has a static IP that falls inside the DHCP pool, conflicts can appear as a block.

Click or Save . The router may reboot. Once the lights stabilize, the blocked device should automatically reconnect.

Enter the administrative credentials. If these have not been changed from the default, they can often be found on a sticker on the bottom or back of the router.