What causes constant disconnects and reconnects

Your internet drops and reconnects because something is breaking the connection between your device and your router, or between your router and your internet service provider. The most common culprits are a weak WiFi signal, an overheating router, loose cable connections, interference from other devices, or a problem on your ISP's network itself.

When your connection drops, your device loses contact with the network. When it reconnects, your device finds the network again and logs back in. If this happens repeatedly, you are dealing with an unstable connection rather than a complete outage. The pattern matters: if it happens at the same time each day, it is likely a network issue. If it happens randomly, it is usually hardware or interference.

Key Takeaways

  • WiFi disconnects most often come from weak signal strength, interference from microwaves or cordless phones, or your router overheating.
  • Check that all cables running into your modem and router are pushed in firmly, because loose connections cause frequent drops.
  • Moving your router to a central, elevated location away from walls and metal objects can improve signal stability.
  • If disconnects happen at the same time daily or only affect one device, contact your ISP to check for network problems on their end.
  • Restarting your modem and router by unplugging them for 30 seconds often fixes temporary connection problems.

WiFi signal strength and distance

WiFi has a limited range, and the farther you are from your router, the weaker the signal becomes. A weak signal does not always mean no connection — it means your device has to work harder to stay connected, and interference or obstacles can knock you offline. If you disconnect and reconnect in the same spot, move closer to the router to test whether distance is the problem.

Walls, especially those with metal studs or insulation, block WiFi signals. Concrete and brick are worse than drywall. If your router is in a closet, basement, or behind a filing cabinet, move it to an open, central location at least a few feet off the ground. Placing it on a shelf or mounting it on a wall works better than leaving it on the floor. Avoid putting it inside a cabinet or behind a TV, even if it looks neater.

Interference from other devices

WiFi operates on the 2.4 GHz frequency, which is also used by microwaves, cordless phones, baby monitors, and some older wireless speakers. When these devices are running near your router, they can jam your WiFi signal and cause disconnects. The problem is worse if your router and the interfering device are close together.

Move your router away from the kitchen if you use a microwave frequently. Keep it away from cordless phone base stations and baby monitors. If you have a dual-band router (one that broadcasts both 2.4 GHz and 5 GHz), switch your devices to the 5 GHz band when possible — fewer household devices use that frequency, so interference is less likely. Check your router's settings or your device's WiFi network list to see which bands are available.

Loose cables and hardware problems

A loose cable between your modem and router, or between your modem and the wall outlet, can cause intermittent disconnects. Unplug each cable and push it back in firmly until you hear or feel it click. Do this for the power cable, the cable from the wall to your modem, and the cable from your modem to your router. A cable that looks connected may not be fully seated.

Routers overheat when they run continuously without ventilation. If your router is hot to the touch or shuts down briefly before coming back online, it is overheating. Move it to a location with airflow, away from other electronics that generate heat. Do not cover it with anything. If it continues to overheat, the internal fan may be failing and the router may need replacement.

Restarting your modem and router

A restart clears temporary errors and resets the connection to your ISP. Unplug your modem from power, wait 30 seconds, and plug it back in. Wait for all the lights to stabilize (usually two to three minutes). Then unplug your router, wait 30 seconds, and plug it back in. Wait another two to three minutes for it to fully restart.

Do the modem first, then the router — the order matters because your router needs the modem to be online before it can connect to the internet. If disconnects stop after a restart, the problem was temporary. If they return within a few hours or days, you have a persistent issue that needs further investigation.

When the problem is on your ISP's network

If disconnects happen at the same time every day, or if they affect all your devices at once, the problem may be on your ISP's network rather than your equipment. Your ISP performs maintenance, upgrades, and repairs that can cause brief outages or instability. You can check your ISP's status page or call their support line to ask whether they have reported issues in your area.

Keep a log of when disconnects happen — the date, time, and how long the connection was down. If you see a pattern, share it with your ISP when you call. They can check their network logs to see whether there was an outage or problem at that exact time. If the problem is on their end, they will fix it without you having to do anything.

Testing one device at a time

If only one device disconnects and reconnects while others stay online, the problem is with that device, not your network. The device's WiFi card may be failing, its drivers may be outdated, or it may have a setting that causes it to disconnect. Try connecting that device to a different network (a phone's hotspot, a friend's WiFi) to see whether it disconnects there too.

On Windows, open Settings, go to Network and Internet, select WiFi, and look for "Manage known networks." Delete the network you are having trouble with, then reconnect and re-enter the password. On Mac, open System Preferences, go to Network, select WiFi, and click "Advanced." Remove the network from the list and reconnect. This clears out old or corrupted connection settings that sometimes cause drops.

Frequently Asked Questions

Why does my internet disconnect when I use the microwave?

Microwaves emit radiation on the same 2.4 GHz frequency that WiFi uses. When the microwave is running, it jams the WiFi signal and causes disconnects. Move your router away from the kitchen, or switch your devices to the 5 GHz band if your router supports it. The problem stops as soon as the microwave turns off.

Does restarting my router actually fix anything or is it just a myth?

Restarting clears temporary errors in your router's memory and resets the connection to your ISP. It fixes problems caused by software glitches, memory leaks, or temporary network hiccups. If disconnects return within hours, the restart helped but did not solve the underlying problem. If they do not return for days or weeks, the issue was temporary.

How do I know if the problem is my WiFi or my internet connection itself?

Unplug your WiFi router and connect one device directly to your modem with an ethernet cable. If disconnects continue, the problem is your internet connection or modem. If they stop, the problem is your WiFi router or signal. This test takes five minutes and tells you exactly where to focus your troubleshooting.

What should I tell my ISP when I call about disconnects?

Tell them when the disconnects happen (time of day, how often), which devices are affected (all of them or just one), and how long each disconnect lasts. If you have restarted your modem and router already, mention that. Ask them to check their network logs for outages or problems at those times. They may see something on their end that explains what is happening.