Wi-Fi Error: Deauthentication Frame Received — What It Means & How to Fix It

What Does This Error Mean?

A deauthentication frame is a message from a router that tells a device its Wi-Fi session is ending. When your device receives one unexpectedly, it disconnects from the network. This can happen naturally (router reboot, idle timeout) or be forced by interference or, rarely, a malicious actor.

Affected Models

Windows 10
Windows 11
macOS
Android
Linux
Network diagnostic tools

Common Causes

The router restarted or updated its firmware and sent a disconnect notice to all devices
The Wi-Fi signal dropped too low and the router terminated the session
Interference from other Wi-Fi networks or devices on the same channel
The router's idle timeout setting disconnected inactive clients
A deauthentication attack is being used to force reconnections (rare but possible)

How to Fix It

Check if the router recently restarted. Log into the router admin page and look at the system log. A reboot will show clearly and explains why devices were disconnected.

Router reboots from power outages or firmware updates are the most common cause of deauthentication frames.
Change the Wi-Fi channel on your router. Log into the router admin page and change the channel from Auto to a specific channel — try channel 1, 6, or 11 for 2.4GHz.

Neighboring Wi-Fi networks on the same channel cause interference that triggers disconnections.
Increase or disable the router's idle client timeout. In router settings, find client idle timeout or DHCP lease time and increase it or disable automatic idle disconnection.

Some routers aggressively disconnect devices that have been idle, sending a deauthentication frame to do so.
Move the router or device to improve signal strength. Walls, appliances, and distance all reduce signal. A stronger signal reduces the chance of the router deciding to terminate the session.

Consistent signal above 60% strength prevents most quality-related deauthentication events.
Update your router firmware. Firmware updates often fix bugs that cause routers to send deauthentication frames incorrectly. Check the router manufacturer's website for the latest version.

Known firmware bugs causing excessive deauthentication have been fixed in updates for many popular router brands.

When to Call a Professional

Most deauthentication disconnections are completely normal and caused by everyday router behavior. If you are experiencing frequent unexpected drops, check your router's idle timeout settings and change the Wi-Fi channel to reduce interference. If you suspect a malicious attack, contact your ISP or a network security professional.

Frequently Asked Questions

Is 'deauthentication frame received' a sign my Wi-Fi is being hacked?

Usually no. Deauthentication frames are a normal part of Wi-Fi protocol. Routers send them all the time for routine reasons like restarts and idle timeouts. A malicious deauth attack is possible but requires someone to be physically nearby with specialized software. If you see this in logs occasionally, it is almost certainly normal.

Where do I see 'deauthentication frame received' messages?

You will not see this in a typical Windows or iOS error dialog. It appears in network diagnostic logs, router logs, and tools like Windows Event Viewer or packet capture software. If you saw it in an app or system log, it means your device got disconnected by the router.

Can I prevent deauthentication disconnections from happening?

You can reduce them. Fix channel interference, improve signal strength, update router firmware, and disable aggressive idle timeouts. You cannot prevent all deauthentication frames — they are a fundamental part of how Wi-Fi manages connections. But frequent disconnections from the same router suggest a configuration issue worth investigating.